Memory Stain Recording

Acoustic blues is a family of blues styles performed on non-amplified instruments, most commonly solo voice with acoustic guitar and, at times, harmonica. It emphasizes raw, intimate timbres; elastic vocal phrasing; and guitar techniques such as fingerpicking, alternating-bass patterns, and bottleneck slide. Rooted in African American folk traditions of the U.S. South, acoustic blues typically favors small-scale, conversational performance practice—call-and-response between voice and guitar, expressive "blue notes," and lyrics in the AAB stanza form. Substyles include Delta blues (driving, slide-heavy), Piedmont blues (ragtime-influenced fingerpicking), and Texas blues (looser, narrative-driven playing).

Acoustic rock is a style of rock music built primarily around acoustic instruments—especially steel‑string acoustic guitars—while retaining rock’s song forms, rhythmic drive, and hook‑oriented choruses. Compared with folk or traditional singer‑songwriter material, acoustic rock tends to use stronger backbeats (often played with light drums or hand percussion), more prominent bass movement, and dynamic, chorus‑centric arrangements. The result is a warm, wood‑toned timbre with the energy and structures of rock, but without the distortion and heaviness typical of electric guitar‑led styles. The genre spans intimate solo performances to full‑band “unplugged” settings, often featuring strummed open chords, fingerstyle passages, vocal harmonies, and occasional alternate tunings or capo use to shape color and register.

Alternative folk (often shortened to alt-folk) applies the DIY ethos, experimental textures, and boundary-pushing songcraft of alternative and indie scenes to the acoustic foundations of traditional folk. It preserves storytelling, organic timbres, and intimate vocals, but departs from strict tradition through unconventional arrangements, eclectic influences, and non‑standard production choices. Typical recordings blend acoustic guitar, banjo, or strings with tape hiss, room noise, unusual percussion, or subtle electronics. Lyrics lean toward introspective, surreal, or obliquely political themes, and song structures can be more fluid than verse‑chorus norms. The result is folk’s warmth and narrative sensibility refracted through an alternative lens.

Alternative rock is a broad umbrella for guitar-based rock that emerged from the independent and college-radio scenes as a counterpoint to mainstream, commercial rock. It blends the energy and ethos of punk with the textural and songwriting experiments of post-punk, new wave, jangle pop, and noise rock, often foregrounding introspective or socially aware lyrics. Across its many strains—from the melodic minimalism of college rock to the loud-quiet-loud dynamics of grunge and the artful experimentation of Radiohead-era modernism—alternative rock prioritizes authenticity, sonic individuality, and a do-it-yourself approach. Its sound ranges from chiming, chorus-laden clean guitars to abrasive distortion and feedback, supported by straightforward rock rhythms or off-kilter grooves, and production that can be either raw and live-sounding or polished yet unconventional.

Ambient is a form of electronic and electroacoustic music that prioritizes tone, atmosphere, and texture over conventional song structures and rhythmic drive. It typically features slow-moving harmonies, sustained drones, gentle timbral shifts, and extensive use of space and silence. Rather than drawing attention to itself through hooks or beats, ambient is designed to be as ignorable as it is interesting, rewarding both background listening and focused immersion. Artists often employ synthesizers, samplers, tape loops, field recordings, and subtle acoustic instruments, with reverb and delay creating a sense of place. Substyles range from luminous, consonant soundscapes to darker, more dissonant atmospheres.

Ambient noise wall (ANW) is a microgenre of noise music that blends the monolithic, unchanging "wall" aesthetics of harsh noise wall with the hushed, enveloping qualities of ambient and drone. Instead of abrasive, high-intensity textures, ANW typically presents a subdued, steady-state roar, hush, or rumble that remains largely static over long durations. The focus is on immersion, timbral depth, and the perception of minute internal movements within an ostensibly unvarying sound mass. Dynamics are minimal, rhythm and melody are absent, and pieces often run for extended lengths, encouraging deep listening and spatial awareness. Typical sources include filtered white/pink/brown noise, room tone, tape hiss, HVAC hums, and distant environmental recordings—shaped with narrow EQ bands, gentle saturation, and compression to form a soft yet impenetrable “wall.” Releases often appear on cassette/CDr with minimalist artwork to reinforce the austere, environmental character of the music.

Ambient techno blends the spacious, atmospheric qualities of ambient music with the pulse and structure of techno. It favors subtle four-on-the-floor rhythms, soft-edged percussion, and long-evolving pads and drones over aggressive beats or hooks. Tracks typically unfold slowly across extended lengths, privileging texture, timbre, and psychoacoustic space. The bass is warm and rounded, delays and reverbs are dubby, and harmonic movement is minimal or modal, creating a hypnotic, contemplative flow suited to both attentive listening and late-night dancefloors. Compared with ambient house, ambient techno tends to be more austere and less pop-sample oriented; compared with dub techno, it is often less explicitly rooted in reggae-derived rhythms and may embrace more beatless passages.

Ambient trance is a fusion of trance’s hypnotic pulse with the spacious, atmospheric textures of ambient music. It favors long, evolving arrangements, subdued percussion, and immersive sound design over high-energy drops, creating a transporting, meditative flow. Typical tracks sit on a steady 4/4 grid with gentle, soft‑edged kicks and wide pads, using reverb, delay, and filtering to blur edges and suggest vast space. Melodies are often simple and slowly unfolding, while harmony leans toward modal or consonant progressions that sustain a calm, contemplative mood.

American primitive guitar is a solo, steel‑string acoustic guitar style that blends pre‑war country blues, ragtime, and old‑time folk with modal harmony, drones, and a composerly, often experimental approach. Coined by John Fahey to label his own music, the term emphasizes a raw, unvarnished sound—fingerpicked patterns, open tunings, alternating bass, and ringing drones—used to build long-form pieces that feel both traditional and avant‑garde. Performances are typically instrumental and highly personal, drawing on early American vernacular idioms while welcoming elements from classical form, non‑Western modal systems, and tape‑age lo‑fi aesthetics. The result is a music that sounds rooted and exploratory at once: earthy timbres, propulsive thumb‑picked bass, and hymn‑ or raga‑like modalities that expand folk guitar into a contemplative, composer‑driven art form.

Anatolian rock (also called Anadolu rock or Turkish psych) is a hybrid style that fuses Western rock idioms with Anatolian/Turkish folk traditions and the makam-based modal system. It emerged in the mid-to-late 1960s as Turkish musicians adapted beat, garage, and psychedelic rock to local melodies, scales, and rhythms. Typical instrumentation combines fuzzed electric guitars and bass with amplified bağlama (saz), Farfisa/Hammond organs, and a rock drum kit, often supplemented by traditional percussion. Songs frequently use "aksak" (limping) meters such as 9/8, 7/8, and 5/8, and melodies draw on makams like Hicaz, Hüseyni, Uşşak, Rast, and Kürdi. Lyrics are usually in Turkish and range from folk poetry and mystic allegory to social critique and protest. The style is renowned for its thick, swirling textures—spring reverb, tape saturation, phasing, and wah-wah—while retaining the narrative and modal richness of Anatolian musical heritage. It stands as a signature example of East–West synthesis in popular music.

Anti-folk is a subversive, DIY-minded offshoot of folk that blends the confessional songwriting of the 1960s coffeehouse scene with the irreverence, speed, and attitude of punk. It favors raw, often lo-fi production, simple chord progressions, direct melodies, and sardonic, self-aware lyrics that skewer both mainstream pop and earnest folk orthodoxy. Performances typically feel intimate and unvarnished, privileging personality, humor, and immediacy over polish. The scene coalesced around New York City’s Lower East Side/East Village in the 1980s and 1990s, later inspiring companion scenes in the UK and Europe. Anti-folk’s tone ranges from playful and comedic to biting and political, but it consistently celebrates individuality, candor, and a hand-made aesthetic.

Art rock is a branch of rock music that treats the studio and the album as spaces for artistic experimentation, emphasizing conceptual ideas, ambitious arrangements, and cross-pollination with modernist and avant-garde traditions. It typically favors extended song forms, thematic or conceptual unity, and non-standard instrumentation (strings, woodwinds, synthesizers) alongside rock’s core band setup. Lyrically, it leans toward literary, surreal, or philosophical subjects and often adopts theatrical presentation. Where mainstream rock centers on immediacy and hooks, art rock embraces risk: unusual time signatures, timbral exploration, complex harmony, tape and electronic manipulation, and interludes that draw from classical, jazz, minimalism, and experimental music.

Audio drama is a scripted, performed storytelling medium that relies entirely on dialogue, narration, music, and sound design to convey plot, character, and setting. Unlike audiobooks, which typically feature a single narrator reading prose, audio drama is fully dramatized with a cast of actors, foley effects, atmospheres, and a composed or curated score. It spans genres from mystery and noir to science fiction, horror, and comedy, and is distributed via broadcast radio and, more recently, digital podcast platforms. The craft emphasizes spatial and psychological immersion through sonic cues, pacing, and vocal performance, allowing listeners to visualize scenes without visuals—often called “theatre of the mind.”

Avant-garde music is an umbrella term for boundary-pushing practices that challenge prevailing norms of harmony, rhythm, timbre, form, and performance. It privileges experimentation, conceptual rigor, and a willingness to reframe what counts as music at all. Historically tied to early 20th‑century artistic modernism, avant-garde music introduced atonality, the emancipation of noise, and new forms of notation and process. It embraces indeterminacy, extended techniques, electronics, spatialization, and multimedia performance, treating sound as material to be sculpted, questioned, and reinvented.

Avant-garde pop is a strain of pop music that uses experimental techniques while retaining some degree of songcraft, memorability, or accessibility. It merges the hooks, brevity, and voice-forward focus of pop with the timbral exploration, structural freedom, and conceptual aims of the avant-garde. Typical features include unconventional song forms, extended vocal techniques, unusual harmony (from modal stasis to dissonance and atonality), asymmetric or fluid meter, collage and musique concrète tactics, and studio-as-instrument production. The result can range from lush and cinematic to stark and abstract, but it remains oriented toward the communicative immediacy of pop.

Avant-prog (avant-garde progressive rock) is a branch of progressive rock that emphasizes experimentation, dissonance, and structural innovation. It often blends rock instrumentation with chamber-music timbres (strings, woodwinds, brass) and techniques borrowed from 20th‑century classical music, free jazz, and minimalism. Typical traits include irregular and shifting meters, abrupt contrasts, complex counterpoint, atonal or modal harmony, extended techniques, and through-composed forms that minimize or abandon verse/chorus structures. The mood ranges from stark and austere to playfully surreal, with a frequent penchant for theatricality and sound collage. The movement’s ethos—crystallized by the late‑1970s Rock in Opposition (RIO) collective—was as much cultural as musical, favoring artistic independence, DIY production, and an oppositional stance toward commercial music industry norms.

Balani show is a high‑energy, DJ‑driven street‑party sound from Bamako, Mali. Emerging in the 2000s, it takes its name from the balafon (“bala”), whose interlocking, pentatonic patterns inspire the music’s rapid, percussive riffs and call‑and‑response chants. Built for massive outdoor neighborhood parties, balani show blends local traditions with modern club aesthetics: punchy drum‑machine beats, sirens, whistles, claps, and shouted MC “animations” in Bambara and other Malian languages. Producers often use affordable software (e.g., FL Studio) to sequence balafon‑like synths and djembe samples, creating a relentless, dance‑commanding groove that sits between West African pop and global club styles. The result is a raw, celebratory, and intensely communal sound system culture: portable generators, towering speakers, DJs, and MCs transforming streets into ephemeral dancefloors where traditional Malian rhythmic logic powers contemporary party music.

Blue‑eyed soul is a style of soul music performed primarily by white artists who adopt the vocal inflections, rhythmic feel, and arranging language of classic R&B and gospel. Emerging in the 1960s in the United States and the United Kingdom, it bridges Motown polish and Southern soul grit with pop‑oriented songwriting. Typical recordings feature impassioned lead vocals, stacked harmonies, backbeat‑driven rhythm sections, Hammond organ or electric piano, punchy horn lines, and occasionally lush strings. The result is radio‑friendly soul that retains emotional intensity while appealing to mainstream pop audiences. The label “blue‑eyed soul” has been used descriptively and sometimes controversially; it points to a sound rather than identity. Historically, however, it referred to white performers making music in a soul idiom.

Blues is an African American musical tradition defined by expressive "blue notes," call-and-response phrasing, and a characteristic use of dominant-seventh harmony in cyclical song forms (most famously the 12‑bar blues). It is as much a feeling as a form, conveying sorrow, resilience, humor, and hard-won joy. Musically, blues commonly employs the I–IV–V progression, swung or shuffled rhythms, and the AAB lyric stanza. Melodies lean on the minor/major third ambiguity and the flattened fifth and seventh degrees. Core instruments include voice, guitar (acoustic or electric), harmonica, piano, bass, and drums, with slide guitar, bends, and vocal melismas as signature techniques. Over time the blues has diversified into regional and stylistic currents—Delta and Piedmont country blues, urban Chicago and Texas blues, West Coast jump and boogie-woogie—while profoundly shaping jazz, rhythm & blues, rock and roll, soul, funk, and much of modern popular music.

Blues rock is a guitar-driven style that fuses the raw feeling and 12‑bar structures of the blues with the power, volume, and rhythmic punch of rock. It emphasizes riff-based songs, pentatonic and blues-scale soloing, call‑and‑response between voice and guitar, and an expressive, often gritty vocal delivery. Typical ensembles are power trios (guitar, bass, drums) or quartet formats adding second guitar, keyboards, or harmonica, and performances commonly feature extended improvisation. Sonically, it favors overdriven tube-amp tones, sustained bends, vibrato, and dynamic contrasts, moving from shuffles and boogies to straight‑eighth rock grooves.

Broadband noise is a strain of noise music that centers on wide-spectrum, non-tonal sound masses that occupy most or all of the audible frequency range. Instead of melody or rhythm, it foregrounds texture, spectral density, and perceived loudness. Artists generate full-band energy using white/pink/brown noise sources, mixer and amplifier feedback, radio static, and heavily saturated effects chains. The aesthetic goal is continuous, immersive sonic pressure in which discrete events are masked by a dense, evolving field of sound. While it intersects with harsh noise, broadband noise is defined by its broad spectral spread and saturating presence, prioritizing timbral contour, dynamics, and textural change over structure in the traditional musical sense.

The Canterbury scene is a branch of late‑1960s British progressive rock whose musicians clustered around the city of Canterbury in England. It blends psychedelic rock’s exploratory spirit with the harmonic language and improvisational freedom of modern jazz, favoring sophisticated song forms, whimsical English wit, and a warm, organ‑rich timbre. Compared with heavier strands of prog, Canterbury music tends to be lighter in touch, melodically playful, and harmonically adventurous, often moving between odd meters and swung grooves, extended jazz chords, and conversational ensemble interplay. Vocals and lyrics are frequently surreal, self‑aware, and gently humorous, while the arrangements pivot between tightly composed passages and open improvisation.

Chamamé is a traditional dance-music style from Argentina’s Litoral region (especially the province of Corrientes) characterized by a flowing 6/8–3/4 sesquiáltera feel, expressive accordion or bandoneón melodies, and guitars providing rhythmic and harmonic support. It is music for dancing in couples, with a swaying, gliding motion that mirrors the riverine landscapes of the Paraná and Uruguay rivers. The genre blends European social-dance influences (polka, schottische, mazurka, waltz) with Indigenous Guaraní aesthetics and language, often featuring the sapukai—a celebratory shout—within performances. Lyrically, chamamé is typically nostalgic and pastoral, evoking love, family, migration, and the natural environment, and it frequently mixes Spanish with Guaraní vocabulary.

Chillout is a broad, downtempo-oriented style of electronic music designed for relaxation, decompression, and after-hours listening. It emphasizes spacious atmospheres, gentle grooves, and warm timbres over intensity or virtuosity. Emerging from the “chill-out rooms” of UK and Ibiza clubs, the sound blends ambient pads, soft 4/4 or broken-beat rhythms, and melodic fragments drawn from lounge, jazz, bossa nova, and Balearic traditions. Typical tempos range from about 70–110 BPM, with extended chords, subtle basslines, and abundant reverb and delay to create a sense of depth and calm. Though often used as an umbrella for related styles (ambient, downtempo, trip hop, lounge), chillout retains a distinct focus on mood: it privileges texture, space, and gentle momentum, making it a staple for late-night sets, beach bars, and home listening alike.

Chillstep is a mellow, melodic offshoot of dubstep that emphasizes atmosphere, emotion, and cinematic sound design over aggressive bass modulation. It retains dubstep’s half-time rhythmic feel but replaces abrasive wobbles with warm subs, airy pads, and gently evolving textures. Typical tracks sit around 140 BPM (often felt as a spacious 70 BPM half-time groove), blending downtempo pacing with ambient spaciousness. You’ll often hear reverb-laden vocals, delicate piano or guitar lines, soft arpeggios, and field recordings, all arranged to create a soothing, introspective mood rather than a dancefloor peak.

Chillwave is a late-2000s microgenre of electronic pop characterized by hazy, retro-tinged synthesizers, lo‑fi textures, understated drum machines, and heavily processed, dreamlike vocals. Its sound evokes sun-faded nostalgia, often referencing 1980s synth-pop and soft rock atmospheres filtered through cassette hiss, chorus, and reverb. Built by bedroom producers during the blog era, chillwave prizes mood over virtuosity: gentle major-seventh harmonies, loop-friendly motifs, and sidechain‑pumped pads create a warm, gauzy drift. Visual and conceptual aesthetics—VHS artifacts, pastel palettes, palm trees, and memories of an endless summer—are integral to its identity.

Comedy (as a music genre) comprises songs and recorded pieces designed primarily to make listeners laugh through parody, satire, wordplay, character voices, and situational humor. It often borrows the musical language of whatever is popular at the time—pop, rock, hip hop, folk, musical theatre—then subverts expectations with humorous lyrics, exaggerated performance, and sonic gags. Rooted in vaudeville and music hall traditions, comedy music ranges from novelty songs and topical ditties to elaborate pastiches and narrative sketches. It values comedic timing as much as musical craft, using hooks, rhyme, and arrangement to set up and deliver punchlines while remaining musically engaging.

Contemporary Christian music (CCM) is a broad umbrella of popular music that expresses the Christian faith using the sound, structures, and production values of mainstream pop, rock, and singer‑songwriter styles. Emerging from the late‑1960s Jesus Movement, it pairs radio‑friendly hooks and polished arrangements with explicitly Christian lyrics—ranging from personal testimony and devotion to congregational praise. Over time, CCM has absorbed elements from soft rock, folk, country, and modern pop trends, and it now includes both artist‑driven radio pop and church‑oriented worship music.

Crossover jazz is a pop-leaning branch of jazz designed to reach listeners beyond the traditional jazz audience. It blends melodic hooks, radio-friendly song structures, and polished production with jazz harmony and concise improvisation. Typical timbres include lead saxophone or clean electric guitar supported by Fender Rhodes or other electric pianos, warm synthesizers, and a tight rhythm section rooted in funk, R&B, and soft rock. Compared with jazz fusion it is more melody-first and chart-oriented, and compared with later smooth jazz it often carries a more assertive groove and clearer ties to mainstream jazz phrasing. String sections, background vocals, and meticulous studio sheen are common, emphasizing accessibility while still showcasing tasteful solos and sophisticated chord colors.

Dark ambient is a subgenre of ambient music that emphasizes ominous, brooding atmospheres, sub-bass rumbles, and textural noise over melody and rhythm. It often evokes feelings of isolation, cosmic dread, sanctified ritual, or post-industrial decay, prioritizing mood and immersion above traditional song structure. Typical sound design includes layered drones, heavily processed field recordings, metallic resonances, dissonant tone clusters, and cavernous reverbs. The music tends to evolve slowly over long durations, with subtle timbral shifts and spectral motion substituting for harmonic progression or beat-driven momentum.

Dark cabaret is a theatrical, macabre-tinged revival of early 20th‑century cabaret filtered through post‑punk and goth sensibilities. It embraces piano‑led or accordion‑driven songwriting, minor‑key harmonies, and stylized storytelling that draws on Weimar‑era satire, black humor, and noir imagery. Performances are as central as the songs: vocal delivery tends to be expressive and characterful, arrangements are chamber‑like (strings, woodwinds, percussion), and shows often incorporate burlesque, sideshow, and vaudeville aesthetics. Lyrically, dark cabaret juxtaposes romance and ruin, tragedy and farce, exploring themes like decadence, crime, obsession, and the grotesque with a wink and a knife‑edge.

Dark psytrance (often shortened to darkpsy) is an intense, nocturnal branch of psychedelic trance characterized by fast tempos, ominous atmospheres, and dissonant, abstract sound design. It typically runs around 148–160 BPM, featuring a relentless four-on-the-floor kick, rolling sub-bass, and densely layered FM/acid synth textures. Harmonic content leans toward minor modes, chromatic movement, and atonality, with drones, clusters, and horror-tinged foley to evoke a sense of unease. Arrangements are long-form and narrative, with evolving textures, sparse breakdowns, and a focus on hypnotic propulsion suitable for late-night or forest dancefloors.

Dark wave is a moody, melancholic offshoot of post-punk and new wave that emphasizes minor-key harmonies, somber timbres, and introspective or romantic lyrical themes. It blends the icy textures of early synthesizers and drum machines with reverb-laden guitars and melodic, driving basslines. The style typically features baritone or ethereal vocals, atmospheric production with heavy use of chorus, delay, and reverb, and tempos that range from slow and brooding to mid-tempo and danceable. Dark wave spans both guitar-oriented and synth-forward approaches, and often overlaps with related movements such as coldwave, minimal wave, and ethereal wave.

Darkcore is a darker, moodier strain of early-1990s UK breakbeat hardcore that deliberately shifted rave music away from euphoric pianos and diva vocals toward ominous atmospheres and heavy bass. It centers on chopped breakbeats, sub‑bass pressure, Reese and Hoover stabs, horror‑film samples, and minor‑key pads, creating a tense, nocturnal sound that prefigured jungle and drum and bass. Typical tempos range from roughly 150–165 BPM, with DJ‑friendly 12" arrangements, dramatic breakdowns, and sound‑design tricks such as early time‑stretching artifacts, pitch‑shifting, and aggressive filtering.

Darksynth is a brooding, aggressive offshoot of synthwave that fuses 1980s cinematic synth aesthetics with the bite of industrial and EBM. It emphasizes distorted bass arpeggios, minor-key motifs, and ominous atmospheres inspired by slasher films, cyberpunk dystopias, and occult imagery. The style typically features saturated analog-style timbres, reese and FM basses, gated reverbs, and pounding, 80s-informed drum programming. While it retains retro color and melody, it pushes into harsher sound design, higher contrast dynamics, and heavier rhythmic impact than most synthwave, often flirting with metal’s intensity and industrial’s menace.

Downtempo is a mellow, groove-oriented branch of electronic music characterized by slower tempos, plush textures, and a focus on atmosphere over dancefloor intensity. Typical tempos range from about 60–110 BPM, with swung or laid-back rhythms, dub-informed basslines, and warm, jazz-tinged harmonies. Stylistically, it blends the spaciousness of ambient, the head-nodding rhythms of hip hop and breakbeat, and the cosmopolitan smoothness of lounge and acid jazz. Producers often use sampled drums, Rhodes or Wurlitzer electric pianos, guitar licks with delay, and field recordings to create intimate, cinematic soundscapes. The mood spans from soulful and romantic to introspective and dusk-lit, making it a staple of after-hours listening, cafes, and relaxed club back rooms.

Dream trance is a melodic, emotive strand of mid‑1990s trance that blends club‑ready four‑on‑the‑floor rhythms with lullaby‑like hooks, lush pads, and prominent piano or bell‑tone leads. It favors wistful, often minor‑key themes, long reverbs, and gentle filters that swell and recede, creating a floating, nocturnal atmosphere. Typically clocking in around 130–138 BPM, tracks are arranged with DJ‑friendly intros and outros, a patient breakdown that foregrounds the main melody (frequently on a bright piano patch), and a euphoric but soft‑edged drop. Compared to harder trance offshoots, dream trance leans closer to Balearic and new‑age moods, prioritizing melody and sentiment over aggression.

Dreampunk is a vaporwave-adjacent strain of ambient music that evokes rain-slicked, neon-lit cityscapes and late-night solitude. It favors widescreen pads, lingering reverb, and soft-focus textures that feel cinematic yet intimate, as if overheard from an apartment window above an endless metropolis. The style often incorporates field recordings—rain, traffic, station announcements—alongside subdued downtempo rhythms or entirely beatless passages. Harmonies tend to be lush but restrained, leaning on suspended tones and minor 7th colorings that drift rather than resolve. The result is a dreamlike, nocturnal mood that sits between ambient, vaporwave, and cyberpunk film score aesthetics.

Drone is a minimalist music genre defined by sustained tones, long durations, and extremely gradual change. Harmony is often static or centered on a single fundamental with subtle overtone shifts, while rhythm tends toward stasis or very slow pulses. Sound sources range from acoustic instruments (e.g., strings, organ, bagpipes, shruti box, tambura) to electronics (sine waves, oscillators, feedback, tape loops, and later digital synthesis and processing). Many composers favor just intonation or other alternative tuning systems to emphasize beating patterns, psychoacoustic effects, and the internal life of sound. Although drone as a sonic principle is ancient and global, the modern experimental genre cohered in the 1960s through the New York minimalists and related avant‑garde circles, then spread into ambient, experimental, and heavy music scenes. The focus is less on melody and more on timbre, resonance, and the phenomenology of listening.

Dungeon sound is an underground, lo‑fi strain of trap/phonk that cultivates a claustrophobic, “subterranean” atmosphere through tape‑worn samples, heavy sub‑bass, and ominous melodics. It typically borrows chopped and screwed vocal snippets from 1990s Memphis rap, horror film cues, and eerie ambient/drone textures to build a bleak mood. Production emphasizes dusty loops, minimal drum programming, and wide, cavernous reverb—evoking the feeling of beats echoing inside a dungeon. Tempos usually sit in the 90–110 BPM range (or presented in half‑time at higher grids), with punchy 808s, sparse hats, and saturated mixes that privilege vibe over polish.

Electric blues is a postwar evolution of the blues that centers on amplified instruments and a compact, urban band sound. It emerged when rural blues musicians brought their music to industrial cities and adopted electric guitar, amplified harmonica, bass, drums, and piano to cut through noisy clubs. Musically, electric blues relies on 12‑bar and 8‑bar forms, dominant‑7th harmony, and a swung shuffle or boogie groove. Guitarists use string bends, wide vibrato, double‑stops, turnarounds, and call‑and‑response with vocals and harmonica. Amplified harmonica (often through a bullet mic and small tube amp) acts like a lead horn, trading riffs with the guitar. The sound is thick, gritty, and vocal, with tube‑amp breakup, subtle reverb, and sometimes tremolo. Lyrically, themes cover migration, love and betrayal, work and hardship, and the pulse of city life. Regionally, Chicago became the emblem of the style, but strong variants also blossomed in Memphis, Detroit, and Texas.

Epic collage is a long-form, sample-dense approach to sound collage in which hundreds—sometimes thousands—of short audio fragments are woven into a single, continuous narrative arc. Instead of short mashups or brief interludes, works in this style typically unfold as suite-like journeys that emphasize momentum, thematic callbacks, and cinematic pacing. The style borrows the crate-digging ethos and rhythmic grid of hip hop and turntablism, the textural experimentation of musique concrète and tape music, and the psychedelic density of sampledelia. The result is a highly curated stream of microedits, voice drops, hooks, and texture beds that flow through clear movements, creating a sense of “epic” scope and storytelling purely through sampling and mixing.

Experimental music is an umbrella term for practices that prioritize exploration, process, and discovery over adherence to established genre norms. It embraces new sound sources, nonstandard tuning systems, indeterminacy and chance operations, graphic and open-form scores, extended techniques, and technology-led sound design (tape, electronics, computers, and live processing). Rather than a single style, it is a methodology and ethos: testing hypotheses about sound, structure, and performance, often blurring boundaries between composition, improvisation, sound art, and performance art. Listeners can expect unfamiliar timbres, unusual forms, and an emphasis on how music is made as much as the resulting sound.

Field recording is the practice and genre of capturing sounds in situ—outside the studio—using portable recording equipment. It centers on documenting environments, human activities, wildlife, weather, machinery, rituals, and music as they actually occur, often with minimal intervention. As a listening genre, field recording foregrounds place and presence. Releases may present unprocessed, extended takes (e.g., a shoreline at dawn), or carefully edited sequences that map a soundwalk, a village festival, or a factory floor. The results range from documentary-style fidelity to abstract, immersive soundscapes that emphasize texture, spatiality, and the ecology of sound.

Filin (from the English word “feeling”) is a mid‑20th‑century Cuban song movement that blends the poetry and romanticism of bolero and Cuban trova with the harmonic language and phrasing of U.S. jazz. Characterized by intimate, crooning vocals, sophisticated jazz‑influenced chord progressions, and small‑combo accompaniment (guitar or piano with light rhythm section), filin favors subtle dynamics, rubato, and conversational phrasing. Its songs often use AABA or verse–refrain forms and highlight nuanced lyricism about love, memory, and urban nightlife. Emerging from Havana’s bohemian clubs and radio scene, filin modernized Cuban romantic song and became a key bridge between early trova/bolero and later currents such as nueva trova and jazz‑inflected Latin balladry.

Folk is a song-centered acoustic tradition rooted in community storytelling, everyday life, and social history. It emphasizes clear melodies, simple harmonies, and lyrics that foreground narrative, protest, and personal testimony. As a modern recorded genre, folk coalesced in the early-to-mid 20th century in the United States out of older ballad, work song, and rural dance traditions. It typically features acoustic instruments (guitar, banjo, fiddle, mandolin, harmonica), strophic song forms, and participatory singing (choruses, call-and-response).

Garage rock is a raw, energetic style of rock music that emerged in the mid-1960s from local scenes across North America. Typically performed by amateur or semi-professional teenage bands in basements and suburban garages, the sound is unpolished and immediate, favoring feel over finesse. Its hallmarks include distorted guitars, pounding drums, simple chord progressions (often I–IV–V), prominent Farfisa/Vox organ riffs, and shouted, attitude-heavy vocals. Songs are short, hooky, and driven by rhythmic urgency, with lyrics about teenage love, boredom, rebellion, and swagger. The style became a direct ancestor of proto-punk and punk rock, prized for its do-it-yourself spirit and visceral impact.

Gothic (often shortened to goth in a musical context) is a dark, atmospheric strain of post‑punk that emphasizes minor-key harmonies, bass-led grooves, and a brooding, romantic sensibility. It blends the stark urgency of punk with art-rock textural experimentation, icy new-wave synths, and lyrical themes drawn from gothic literature, existentialism, and melancholic introspection. Signature traits include chorus- and reverb-drenched guitars, prominent melodic basslines, steady drum-machine patterns, baritone or ethereal vocals, and a production aesthetic that favors space, echo, and nocturnal ambience. While closely associated with the UK goth subculture, the style quickly spread internationally, influencing parallel scenes such as dark wave, deathrock, and later gothic metal.

Graphical sound is an early electroacoustic technique and aesthetic in which audio is generated from drawings, stencils, or photographed shapes placed on optical film soundtracks. Instead of recording a vibrating source with a microphone, composers directly designed waveforms and spectra, then scanned them with optical readers to produce sound. Emerging in the Soviet Union and Germany, practitioners treated sound as visible geometry: curves set the waveform, patterns set the spectrum, and motion through time created phrasing and rhythm. The result ranges from pure tones and microtonal glissandi to dense, noise-like textures—predating and foreshadowing later tape, electronic, and spectral practices.

Guided meditation is a spoken-word centric style designed to lead listeners through relaxation, mindfulness, breath awareness, or visualization. A calm, intimate voice provides step‑by‑step instructions over an unobtrusive musical bed, often featuring drones, soft pads, gentle acoustic textures, and nature ambiences. The music avoids strong rhythmic drive and sudden dynamics, favoring slow evolutions, long reverbs, and consonant harmony. Tracks typically last from 5 to 60 minutes, and may focus on themes such as body scans, sleep induction, stress relief, compassion practices, or positive affirmations.

Hauntology is a retro-futurist strain of experimental electronic music that evokes the "ghosts" of lost cultural futures. Emerging in the United Kingdom in the mid‑2000s, it draws on half-remembered media—library music, public information films, children’s TV idents, and Radiophonic textures—to produce an atmosphere of eerie nostalgia and cultural memory. Sonically, the style favors degraded media and analogue patina: vinyl crackle, tape hiss, wow and flutter, and dusty archival samples. It often pairs subdued drones and detuned synths with looped fragments, sparse percussion, and unresolved harmonies to create a feeling that is at once comforting and unsettling. The term originates in Jacques Derrida’s philosophy and was popularized in a musical context by critics such as Mark Fisher and Simon Reynolds. In music, it names both a sound palette and a way of listening that foregrounds memory, media archaeology, and the uncanny persistence of the past within the present.

Horrorcore is a subgenre of hip hop defined by its fixation on dark, violent, and occult imagery, delivered through menacing flows, brooding production, and cinematic sound design. It often blurs the line between pulp-horror storytelling and social or psychological commentary, adopting personas that heighten shock value while exploring fear, trauma, or taboo themes. Musically, horrorcore favors minor keys, dissonant intervals, and eerie samples—think detuned pianos, church organs, creaking doors, screams, and snippets from horror films—over hard, bass-heavy drums. The result is an atmosphere that feels claustrophobic and threatening, yet theatrically stylized, evoking the mood of slasher movies and cult horror soundtracks.

Industrial musical is a form of corporate-sponsored musical theatre created for internal audiences—sales conferences, dealer meetings, or employee conventions—rather than the general public. Typically staged with Broadway-caliber writers, performers, and pit bands, these productions blended show-tune craft with brand messaging. Songs and sketches celebrated new product lines, corporate values, and sales targets, turning technical features and business strategy into catchy choruses and comedic patter. The genre peaked in postwar America, when large companies could fund lavish, one-off productions to motivate salesforces and unveil products. Although rarely commercially released, archival recordings and the documentary “Bathtubs Over Broadway” later revealed their sophisticated songwriting, virtuosic performers, and charmingly earnest corporate optimism.

Instrumental is music created and performed without sung lyrics, placing the expressive weight on melody, rhythm, harmony, and timbre produced by instruments. As an umbrella practice it appears in many cultures, but its modern identity cohered in Baroque-era Europe when purely instrumental forms such as the sonata, concerto, and dance suites began to flourish. Since then, instrumental thinking—developing motives, structuring form without text, and showcasing timbral contrast—has informed everything from orchestral music and solo piano repertoire to post-rock, film scores, and beat-driven electronic styles. Instrumental works can be intimate (solo or chamber) or expansive (full orchestra), narrative (programmatic) or abstract (absolute music). The absence of lyrics invites listeners to project imagery and emotion, making the style a natural fit for cinema, games, and contemplative listening.

Jersey sound (often called the Jersey Shore sound) is a horn-driven, R&B-inflected strain of rock that coalesced in the bar-band scene of coastal New Jersey, especially around Asbury Park. It blends the energy of 1950s rock and roll and 1960s soul with blue-collar storytelling, big choruses, and live, communal arrangements. Hallmarks include a prominent saxophone, Hammond organ or piano, gospel-tinged backing vocals, and an anthemic, sing-along approach meant for packed clubs and dance floors. Lyrically, songs often focus on working-class life, late-night boardwalk romances, cars, hometown friendships, and the push–pull between escape and belonging. The overall feel is simultaneously celebratory and nostalgic, marrying party-ready grooves with reflective narratives.

Madchester is a late-1980s Manchester music scene and sound that fused jangly indie/alternative rock with acid house, funk, and psychedelic influences. It emphasized danceable grooves, repetitive basslines, baggy drum feels, and anthemic, chant-like choruses. More than a sonic palette, Madchester was a cultural moment centered around Factory Records, the Haçienda nightclub, and a hedonistic rave-meets-guitar-pop aesthetic. Its artists bridged club culture and indie rock, popularizing house-derived rhythms and ecstatic, communal live energy within a band format.

Minimalism is a style of Western art music that emerged in the United States during the 1960s, characterized by the use of very limited musical materials, steady pulse, and extensive repetition. Composers often build pieces from short cells or motifs that are repeated and slowly transformed through additive or subtractive processes, phase shifting, and gradual changes in harmony, texture, or register. Harmony is typically consonant (often modal or diatonic), though just intonation and extended drones are also common. The result is music that foregrounds process, clarity, audibility of structure, and a hypnotic sense of stasis and flow. Typical ensembles include keyboards, mallet percussion, strings, winds, voices, and electronics or tape. Minimalism influenced a wide array of later styles, from ambient and new age to post-minimalism and minimal techno.

Musique concrète is an electroacoustic approach to composition that uses recorded real‑world sounds (objets sonores) as primary material rather than traditional instruments or notation. Composers edit, splice, loop, reverse, time‑stretch, filter, and otherwise transform these recordings to create works designed for loudspeakers. Emerging in late‑1940s France, it introduced acousmatic listening—focusing on the sound itself, detached from its source—along with a morphology‑based vocabulary of gesture, texture, and timbre. Historically realized on tape and now on digital audio workstations, musique concrète privileges montage and transformation over conventional harmony and meter, inviting listeners into a rich, tactile world of sonic phenomena.

Nature sounds is a genre centered on unprocessed or minimally processed recordings of the natural acoustic environment—such as rain, wind, ocean surf, rivers, birdsong, insects, and forests—presented as the primary listening material. Rather than foregrounding melody or harmony, the genre emphasizes environmental texture, spatial depth, and the psychoacoustic qualities of place. While nature has been recorded since the early days of audio technology, nature sounds emerged as a distinct listening genre with the rise of ambient and New Age listening cultures, wellness and relaxation records, and the availability of high-fidelity field recording gear. Releases often aim for restorative, meditative, or documentary experiences, ranging from untouched soundscapes to gentle edits that preserve realism.

New wave is a post-punk, pop-forward movement that blends the immediacy of punk with glossy pop hooks, danceable rhythms, and an art-school sensibility. Defined by crisp, often chorused guitars, prominent bass, steady four-on-the-floor or disco-inflected drums, and increasing use of synthesizers and drum machines, it channels irony and modernist themes into tight, radio-ready songs. Vocals tend to be cool or arch, lyrics frequently explore urban life, technology, alienation, and romance, and production is bright, spacious, and stylized. While stylistically diverse—from guitar-jangle and power-pop sheen to synth-driven minimalism—new wave is unified by its emphasis on craft, melody, and a sleek, contemporary aesthetic that helped bridge punk’s DIY energy with mainstream pop and dance culture.

Night full-on is a darker, heavier branch of full-on psytrance designed specifically for nighttime dance floors. It keeps the driving, rolling bass and clear structure of full-on but shifts the palette toward minor modes, tense atmospheres, metallic textures, and sharper, more percussive leads. Typical tempos range from 144 to 148 BPM, with punchy 4/4 kicks and tightly sidechained basslines that maintain relentless forward motion. Compared with morning full-on, night full-on is less euphoric and more ominous, using FM/PM synthesis, glitchy stabs, and cinematic build-ups to create suspense and cathartic drops while still retaining melodic threads and coherent song forms.

Non-music is an umbrella category for recorded audio whose primary purpose is not musical performance. It encompasses spoken word, speeches, interviews, poetry readings, comedy, audio documentaries, instructional recordings, field recordings, sound effects, and other forms of organized sound meant to inform, narrate, document, or entertain without relying on melody or conventional song structure. Rather than emphasizing harmony, rhythm, and instrumentation, non-music foregrounds voice, text, ambient sound, narrative flow, informational content, and sonic texture. Its aesthetics range from raw, unedited actuality to highly produced studio works, and its scope spans archival preservation, education, performance art, and mass entertainment.

Old-time is a North American string-band tradition rooted in the rural South and Appalachia, where fiddles and banjos lead dance tunes, ballads, and breakdowns. It emphasizes a steady, trance-like groove for social dancing, ensemble playing over solos, and strong melodic riffs supported by drones and rhythmic ostinati. The sound blends British Isles balladry and fiddle repertory with African American banjo technique and rhythmic sensibilities. Tunes are commonly modal (Dorian, Mixolydian, Aeolian), arranged in two repeated strains (AABB), and played for extended durations to serve square and contra dancing. Vocals, when present, are often old ballads or topical songs delivered with a plain, direct style.

Post-industrial is an umbrella term for the diverse musical currents that evolved out of first‑wave industrial music in the early 1980s. Rather than a single sound, it describes a methodology: the recontextualization of noise, tape collage, found sound, non‑traditional percussion, and transgressive or esoteric themes into new hybrids. It commonly emphasizes textural experimentation over conventional song form, drawing on ambient drones, harsh electronics, ritualistic rhythms, and performance-art strategies. The scene grew through DIY cassette culture, mail‑art networks, and small independent labels, fostering substyles like power electronics, dark ambient, neofolk, martial industrial, and illbient. Aesthetically, post‑industrial retains industrial’s confrontational stance but disperses it into atmospheric, political, mystical, and avant‑garde directions, making it as much a way of working with sound and media as a genre label.

Production music (also called library or stock music) is music created specifically for licensing in film, television, radio, advertising, games, and online media rather than for retail release. It is organized in catalogues by mood, style, tempo, and usage, making it quick for editors and producers to find suitable cues. Stylistically, production music is highly diverse. It spans orchestral and light music traditions, jazz, lounge, rock, funk, and contemporary electronic idioms, but is unified by functional design: clear edit points, modular structure, alternate mixes, and versions tailored to typical broadcast durations. Successful cues balance memorability with unobtrusiveness so they can support narrative, voice-over, and sound design without distracting from them.

Progressive is an umbrella aesthetic that prioritizes musical development—extended forms, evolving arrangements, sophisticated harmony, and conceptual ambition—over verse–chorus simplicity. Emerging from late-1960s rock and psychedelia, the progressive approach soon permeated multiple styles (rock, electronic, metal, pop, dance music), where "progressive" signals pieces that unfold gradually, introduce new motifs across long arcs, and use timbral and harmonic exploration as core drama. Across its variants, listeners can expect longer tracks, thematic continuity (sometimes across whole albums), expanded instrument palettes (from orchestral colors to synthesizers), odd meters, key changes, and a narrative sense of journey.

Progressive rock is a rock subgenre that expands the genre’s formal, harmonic, and conceptual boundaries. It favors long-form compositions, intricate arrangements, and virtuosic musicianship, often drawing on Western classical, jazz, folk, and psychedelic idioms. Typical hallmarks include multi-part suites, shifting time signatures, extended instrumental passages, recurring motifs, and concept albums that present unified themes or narratives. The sound palette commonly features electric guitar, bass, and drums alongside an array of keyboards (Hammond organ, Mellotron, Moog/ARP synthesizers, piano), woodwinds or brass, and occasional orchestral additions. Lyrics often explore science fiction, mythology, philosophy, social commentary, and introspective themes.

Progressive trance is a substyle of trance that emphasizes long-form development, subtle layering, and hypnotic momentum over sudden dramatic peaks. It typically features evolving pads, pulsating arpeggios, and rolling basslines that build gradually across extended arrangements. Compared to uplifting or anthem trance, progressive trance is more restrained and textural, trading overt melodrama for nuanced tension-and-release. The result is a deep, immersive sound that feels journey-like on the dancefloor while remaining lush and atmospheric in focused listening contexts.

Psychedelic is an umbrella term for music that seeks to evoke, emulate, or accompany altered states of consciousness through sound, arrangement, and studio technique. It emphasizes timbral color, drones, modal harmony, surreal or mystical lyrics, and immersive production, often using tape manipulation, extended effects, and non‑Western instruments (notably from Indian classical traditions). The result ranges from delicate, dreamlike textures to dense, kaleidoscopic soundscapes intended to expand perception and dissolve conventional song form.

Quiet storm is a smooth, romantic subgenre and radio format within rhythm & blues that emphasizes intimacy, warmth, and late‑night mood. It blends the lush arrangements of 1970s soul with gentle jazz inflections, soft rock textures, and highly polished production. Songs typically sit at slow to mid tempos, featuring supple bass, soft drums, Rhodes or electric piano, silky strings or synth pads, and tasteful saxophone or clean, chorus‑tinged guitar. Vocals are smooth and intimate, often exploring love, devotion, and sensuality with understated delivery. The overall effect is relaxed and luxurious, designed for evening listening.

A requiem is a musical setting of the Roman Catholic Mass for the Dead (Missa pro defunctis). Historically rooted in Latin liturgy, it sets movements such as the Introit, Kyrie, (historically) the Sequence Dies irae, Offertory, Sanctus, Agnus Dei, and Communion, and often includes additional responsories like Libera me and In paradisum. While the earliest requiems were monophonic chants, the genre became a showcase for polyphonic and later symphonic choral writing. Renaissance composers wrote austere, modal settings; Classical and Romantic composers expanded the forces and dramatic scope; and 20th–21st century composers reimagined the form with new languages, from neo-modal and impressionistic harmonies to avant‑garde sonorities. Today, requiems appear both in liturgy and as concert works, symbolizing collective mourning, remembrance, and spiritual reflection.

Rock is a broad family of popular music centered on amplified instruments, a strong backbeat, and song forms that foreground riffs, choruses, and anthemic hooks. Emerging from mid‑20th‑century American styles like rhythm & blues, country, and gospel-inflected rock and roll, rock quickly expanded in scope—absorbing folk, blues, and psychedelic ideas—while shaping global youth culture. Core sonic markers include electric guitar (often overdriven), electric bass, drum kit emphasizing beats 2 and 4, and emotive lead vocals. Rock songs commonly use verse–chorus structures, blues-derived harmony, and memorable melodic motifs, ranging from intimate ballads to high‑energy, stadium‑sized performances.

Roots rock is a back-to-basics strain of rock music that reconnects the electric band format with its foundational American roots in blues, country, folk, rhythm & blues, and early rock and roll. It favors sturdy songcraft, earthy timbres, and groove over studio gloss—think twangy or gritty guitars, Hammond organ or piano, a steady backbeat, and plainspoken, story-driven lyrics. The style often carries a "live-in-the-room" feel, medium tempos, and blues-based progressions, evoking bar bands, roadhouses, and rural imagery. Rather than chasing cutting-edge production or virtuosic excess, roots rock emphasizes feel, narrative, and tradition—bridging the immediacy of rock with the storytelling of folk and country and the emotional bite of the blues.

Screamo is an emotionally charged offshoot of emo and hardcore punk characterized by cathartic, screamed vocals, dynamic extremes, and a blend of melody with discordance. Songs often move rapidly between fragile, clean passages and explosive, chaotic climaxes, emphasizing tension-and-release. Guitars favor octave runs, tremolo-picked melodies, and dissonant chord voicings, while drums switch from driving d-beats to blast beats and spacious half-time drops. Lyrics are typically confessional, poetic, and socially aware, delivered with a visceral intensity that foregrounds vulnerability and urgency. Early recordings embraced raw, DIY production and intimate, basement-show energy; later waves incorporated post-rock atmospherics and more expansive songwriting.

Shoegaze is a subgenre of alternative rock characterized by dense, immersive walls of guitar sound, heavily layered effects, and vocals that blend into the mix as another texture rather than a focal point. Typically mid-tempo and enveloping, it emphasizes timbre, atmosphere, and harmonic color over riff-driven hooks. Reverb, delay, chorus, tremolo, fuzz, and pitch-bending create a blurred, dreamlike quality—often described as a "wash"—while bass and drums provide a steady, understated foundation. The style emerged in the United Kingdom in the late 1980s; the term "shoegaze" was coined by the British press, referencing performers’ tendency to look down at their pedalboards during live shows.

Slowcore is a minimalist strain of indie rock defined by extremely slow tempos, hushed dynamics, and sparse arrangements. It emphasizes space, sustain, and emotional restraint over volume or virtuosity, often using clean guitars, soft drumming, and intimate vocals to create a glacial, contemplative atmosphere. Lyrically, it gravitates toward introspection, memory, and everyday melancholy, with melodies that unfold patiently and harmonies that remain simple and diatonic. The result is music that feels heavy with quiet, where silence and decay are as expressive as the notes themselves.

Soft rock is a mellow, melody-forward strain of rock and pop that favors smooth vocals, polished production, and restrained dynamics over distortion and aggression. Built on acoustic and clean electric guitars, piano or electric piano (Rhodes), light rhythm sections, and lush backing vocals or strings, the style centers on memorable hooks and sentimental themes. Its lyrics often explore love, heartbreak, nostalgia, and introspection, delivered with warmth and clarity. Tempos are moderate, grooves are unobtrusive, and harmonies are diatonic with tasteful color (maj7, add9) and occasional key changes. Commercially, soft rock flourished on AM radio and adult contemporary playlists in the 1970s and early 1980s, shaping the sound of radio-friendly ballads and influencing later styles like yacht rock and modern adult contemporary.

Sound art is an interdisciplinary practice that treats sound itself as the primary artistic material, often prioritizing listening, space, and context over conventional musical form. It commonly appears as installations, sculptures, site‑specific works, and conceptual pieces presented in galleries, museums, and public spaces rather than on a traditional stage. Rather than focusing on melody, harmony, or beat, sound art emphasizes timbre, texture, perception, and spatialization. Works may use field recordings, environmental sound, feedback, room acoustics, silence, psychoacoustic phenomena, or generative and interactive systems. The listener’s movement, the architecture, and the social environment frequently become integral to the piece, encouraging attentive, situation‑based listening.

Sound collage is a practice and genre that assembles disparate recorded sounds—speech, field recordings, musical fragments, noise, and media detritus—into a new, cohesive work. It treats recorded sound as raw material to be cut, layered, looped, juxtaposed, and transformed, often privileging texture, timbre, and context over conventional melody and harmony. Emerging from mid‑century tape and electroacoustic experiments, sound collage spans avant‑garde, popular, and club contexts, ranging from radical tape splices to sample‑dense pop and hip‑hop. Because it recontextualizes existing audio, it can be narrative, political, archival, or purely abstract—oscillating between documentary and dreamlike mosaic.

Sound effects is a non-music audio category focused on recorded or designed sounds created to represent actions, environments, and phenomena. Rather than songs or compositions, it consists of single events (one-shots), short sequences, or loops used to support storytelling, worldbuilding, and user feedback in media. Its practice spans on-location recording, foley performance, and studio sound design using synthesis and processing. Typical subjects include footsteps, doors, vehicles, weather, animals, impacts, whooshes, and abstract textures. Sound effects function as building blocks for radio, film, television, games, theater, podcasts, immersive installations, and UI/UX audio.

Sound poetry is a vocal and performance-centered art in which the sonic qualities of language—phonemes, rhythm, timbre, breath, and noise—take precedence over conventional meaning. It treats the voice as an instrument, privileging articulation, texture, and extended vocal techniques (glossolalia, onomatopoeia, sputters, clicks, growls) rather than syntactic sense. Historically linked to the Futurist and Dada avant-gardes, it later embraced microphones, tape, and studio manipulation, blurring boundaries between poetry, music, theatre, and sound art. In performance, sound poetry ranges from minimal breath pieces to dense, rhythmically propelled vocal works, from solo utterance to ensemble structures and electroacoustic collages.

Southern rock is a guitar-driven strain of American rock that emerged from the U.S. South, blending the grit of blues and the twang of country with the volume and swagger of rock. It is distinguished by twin-lead (often harmonized) guitars, prominent slide playing, boogie and shuffle grooves, and a live, jam-forward energy. Hammond B‑3 organ, piano, and rough-hewn, soulful vocals are common. Lyrically, it often explores working‑class life, regional identity, resilience, and the open road, while alternating between barroom stompers and expansive, improvisational epics.

Space ambient is a substyle of ambient music devoted to evoking cosmic scale, interstellar travel, and the vastness of outer space. It emphasizes expansive soundscapes, slow-evolving drones, and a strong sense of spatial depth created by long reverbs, delays, and careful stereo imaging. The music typically avoids overt rhythm and melody in favor of sustained pads, subtly shifting harmonies, and quiet textural details. Analog and digital synthesizers, modular systems, and granular processing are common tools, often complemented by found sounds, radio/space transmissions, and gentle field recordings. The result is immersive, contemplative listening that suggests weightlessness, distance, and awe.

Space rock is a psychedelic branch of rock characterized by long-form, hypnotic grooves, swirling guitars awash in delay and reverb, and prominent analog synthesizers that evoke cosmic or interstellar imagery. The music often emphasizes texture and atmosphere over conventional song structures, creating expansive soundscapes that feel weightless and otherworldly. Emerging in late-1960s Britain from the overlap of psychedelic rock, early progressive rock, and experimental electronics, space rock frequently employs motorik-leaning rhythms, modal or drone-based harmony, and science-fiction themes. Extended improvisations, phased and fuzz-drenched timbres, and tape or echo effects are common, encouraging a sense of forward drift and cosmic exploration.

Spirituals are religious folk songs created by enslaved Africans and their descendants in the United States, blending West African musical practices with Protestant Christian hymnody. Sung primarily a cappella, they feature call-and-response, improvisation, rich timbral expression, and rhythmic drive supported by body percussion (clapping, stomping) and the ring shout. Texts draw on Biblical narratives—especially Exodus, captivity, deliverance, and redemption—while often carrying coded meanings about resistance, escape, and communal hope. Melodies frequently use pentatonic patterns, blue-leaning inflections, and flexible meter, while group performance encourages heterophony and spontaneous variation. Over time, spirituals moved from work fields and praise houses to concert stages through arranged choral traditions, profoundly shaping American music by influencing gospel, blues, jazz, soul, and the broader canon of U.S. folk and popular song.

Stoner rock is a heavy, riff‑centric style that blends the weight and doom of early heavy metal with the groove and expansive jams of late‑60s/70s psychedelic and acid rock. It is marked by fuzz‑drenched, down‑tuned guitars, thick bass tones, and relaxed but powerful mid‑tempo grooves. Songs often emphasize hypnotic, repetitive riffs; extended instrumental passages; and a warm, vintage analog sound. Vocals tend to be laid‑back or gritty rather than operatic, and lyrical themes commonly explore the desert, space, altered states, mythology, and countercultural imagery. The overall vibe is earthy and immersive—equal parts head‑nodding groove, psychedelic haze, and Sabbath‑born heaviness.

Swamp blues is a laid‑back, hypnotic offshoot of Louisiana blues that took shape in the 1950s around Baton Rouge and Crowley. It is marked by loping mid‑tempo grooves, tremolo‑soaked electric guitar, prominent harmonica riffs, and echo‑laden, lo‑fi production that evokes the humid, nocturnal atmosphere of the bayou. Stylistically, it blends rural Delta blues structures with New Orleans R&B backbeats and subtle Cajun/zydeco accents. Records produced by J. D. "Jay" Miller for Excello Records defined the genre’s signature sound: minimal arrangements, space between parts, and swampy reverb that turns simple I–IV–V blues into a moody, rolling trance.

Swamp rock is a gritty, rootsy form of rock that evokes the humid atmosphere of the U.S. Gulf Coast. It blends the loping rhythms and minor-key moods of Louisiana swamp blues with rock and roll drive, country earthiness, and New Orleans R&B grooves. Characterized by tremolo‑soaked electric guitars, thick reverb, hypnotic mid‑tempo grooves, and warm Hammond organ or piano, the style favors simple, blues-based progressions and storytelling lyrics. Songs often reference bayous, backroads, voodoo lore, and the heat and haze of Southern life, creating a sound that feels both murky and magnetic.

Talking blues is a narrative song form in which the verses are rhythmically spoken rather than fully sung, typically over a steady, simple acoustic guitar blues accompaniment. The delivery leans on timing, humor, and conversational asides, often punctuated by a short sung refrain or a witty tagged last line. Emerging in the American South in the 1920s, the style was named and codified by South Carolina musician Chris Bouchillon after his 1926 recording "Talking Blues." It later became a favored vehicle for topical commentary and social satire through the folk revival, especially in the hands of Woody Guthrie, Pete Seeger, and Bob Dylan. Its blend of plain‑spoken storytelling, bluesy harmony, and comic timing helped bridge traditional country/folk performance with modern singer‑songwriter and protest traditions.

Theme and variations is a classical musical form in which a clearly stated theme is followed by a sequence of self-contained variations that transform the theme’s melody, harmony, rhythm, texture, register, mode, meter, or orchestration. Although used across many eras, the form crystallized during the late Renaissance and Baroque periods through keyboard and lute traditions, then became a structural mainstay in the Classical and Romantic eras. In performance, the listener recognizes the original idea through its continuities—often the harmonic plan or characteristic contour—while enjoying the inventive contrasts that each variation brings.

Third stream is a hybrid genre that intentionally merges the languages of jazz and Western classical music. Coined by composer and horn player Gunther Schuller in 1957, the term describes music that is neither "jazz with strings" nor classical music with a swing veneer, but a true synthesis. It typically combines classical forms (such as fugue, theme and variations, or concerto-like structures) and orchestration with jazz harmony, rhythm, and improvisation. The results range from chamber-sized works for jazz combo and string quartet to large pieces for orchestra and jazz soloists. Third stream pieces often alternate between fully notated sections and improvised passages, use counterpoint and extended harmony, and may blend straight and swung time feels within a single work.

Traditional country is a roots-oriented branch of country music that preserves the acoustic timbres, plainspoken storytelling, and danceable rhythms of early "hillbilly" and honky-tonk styles. It favors fiddles, acoustic and steel guitars, upright bass, and modest percussion, with melodies and harmonies grounded in Anglo-American folk, gospel, and blues. Songs typically revolve around everyday life—love, heartbreak, faith, work, and small-town or rural experience—delivered with an unadorned, emotive vocal style. As a practice and ethos, traditional country resists pop sheen and elaborate production, emphasizing live ensemble interplay, two-step and waltz feels, and concise verse–chorus forms. Its sound is closely associated with the Grand Ole Opry era, barn-dance radio, and mid‑century jukebox honky-tonks.

Trance is a form of electronic dance music characterized by steady four-on-the-floor beats, long build‑ups and breakdowns, and euphoric, melodic progressions designed to induce a hypnotic or “trance‑like” state. Typical tempos range from about 130 to 142 BPM, with arrangements often stretching 7–10 minutes to allow DJs room for tension, release, and seamless mixing. The sound palette emphasizes shimmering pads, arpeggiated synth motifs, supersaw leads, and wide, reverberant spaces. Harmonically, trance tends to favor minor keys, modal mixture, and extended suspense before cathartic drops. Production hallmarks include sidechain compression (“pumping”), off‑beat open hi‑hats, rolling basslines, and lush delay/reverb tails. While largely instrumental, a major branch—vocal trance—features lyrical toplines and pop‑leaning structures without losing its club‑centric dynamics.

Tribal ambient is a branch of ambient music that merges spacious, drone-based atmospheres with hand-played, "tribal" percussion, non-Western instrumentation, and environmental field recordings. It emphasizes trance-inducing polyrhythms, ritualistic timbres (frame drums, shakers, clay and skin drums, rattles), and sustained harmonic beds, often evoking a sense of timeless, pre-industrial ritual or nature-centered spirituality. Rather than song-like structures, pieces unfold slowly and organically, favoring texture, space, and gradual transformation over melody or chord changes. The result is immersive, cinematic soundscapes that feel both primordial and otherworldly.

Vocal trance is a melodic, song-oriented branch of trance that foregrounds sung vocals—often emotive, anthemic choruses—within the euphoria and drive of club-ready trance production. It typically runs at 130–138 BPM with a steady four-on-the-floor kick, rolling basslines, supersaw leads, lush pads, and wide reverbs and delays. Pop-like structures (verse, pre-chorus, chorus) are fused with trance’s extended breakdowns and tension-and-release builds, making the music equally suited to radio and large dancefloors. The vocals—frequently airy female leads or expressive duets—carry themes of love, longing, uplift, and introspection, while the instrumentals support them with soaring, harmonically rich arrangements and dramatic drops.

Indie (short for “independent”) began as music made and released outside the major-label system, where a DIY ethos shaped everything from songwriting and recording to artwork and touring. As a sound, indie is eclectic but often features jangly or overdriven guitars, intimate or understated vocals, melodic basslines, and unvarnished production that foregrounds authenticity over gloss. It spans rock, pop, and folk while welcoming electronic textures and lo‑fi aesthetics. Lyrics typically focus on personal observation, small details, and wry self-awareness rather than overt virtuosity or spectacle. Beyond style, indie describes a culture: small labels and stores, college/alternative radio, fanzines/blogs, community venues, and scenes that value experimentation, individuality, and artistic control.

Anime (often called "anisong" for vocal themes) is the umbrella term for songs and scores created for Japanese animation, including opening/ending themes and background music. It blends contemporary J‑pop/J‑rock songwriting with dramatic orchestral scoring and modern electronic production, aiming for instantly memorable hooks and emotionally charged climaxes tailored to a show's narrative and characters. Stylistic hallmarks include high-register, expressive vocals; tight, hook-forward structures (especially 90-second “TV size” versions); bright, polished production; and frequent late-song key changes. Arrangements often hybridize rock bands, strings, brass, and EDM textures to deliver cinematic impact, while lyrics favor aspirational, metaphor-rich imagery that mirrors the series’ themes.

Radio drama is a scripted, voice-acted narrative form created specifically for listening, using dialogue, narration, music, and sound effects to tell stories without visuals. It grew out of theatrical and literary traditions but adapted them for the intimate, imaginative space of radio, where pacing, voice performance, and sonic world-building replace sets and camera work. Episodes range from short sketches to multi-part serials and full-length plays, spanning genres such as mystery, horror, comedy, romance, science fiction, and historical drama.

Breaks is a broad electronic dance music style built around syncopated breakbeat drum patterns instead of a straight four-on-the-floor kick. It emphasizes sliced, rearranged, and layered drum breaks—often sampled from classic funk, hip hop, and early electro—combined with heavy sub-bass and club-ready arrangements. As a scene and label category, “breaks” crystallized in the UK in the late 1990s out of the rave continuum, alongside big beat and later “nu skool breaks.” While tempos usually range from roughly 125–140 BPM, the defining trait is the swung, shuffling, and fragmented rhythm that drives dancers with push–pull groove rather than rigid grid-based kicks. Breaks spans a spectrum from funky, party-oriented tracks to darker, techy, bass-heavy material (often called tech breaks). Across its variants, it remains DJ-friendly, sample-savvy, and grounded in the art of drum manipulation.

Halloween is a seasonal, cross-genre style built around spooky, campy, and horror-driven aesthetics used for the Halloween holiday. Rather than a single musical form, it bundles novelty pop and rock, horror film scoring tropes, eerie sound effects, and dark-tinged electronic or rock textures that evoke ghosts, monsters, haunted houses, and cinematic suspense. Its sonic palette tends to include minor keys and chromaticism, church or theater organs, theremin or theremin-like synths, creaking doors and howling winds, dramatic strings, and reverb-drenched surf or garage guitars. Iconic novelty hits (like Monster Mash), horror-punk, and synth-led film themes (like Halloween) sit alongside funk-pop spectacles (like Thriller) in playlists and compilations that define the Halloween “feel.”