I Thought You Were a Marxist Records

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.

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.

Bit music is a broad term for music built around the sound and constraints of low bit‑depth digital audio, early sound chips, and primitive computer/console hardware. It foregrounds square and pulse waves, noise channels, simple PCM, and the characteristic artifacts of bit‑crushing and low sample rates. While closely related to chiptune, bit music emphasizes the sonic signature of "the bit" itself: 1‑bit beeper techniques, 4/8/16‑bit sample playback, and tracker-based sequencing that exploits extremely limited polyphony and memory. The result is a bright, pixelated timbre that celebrates computational austerity through clever composition tricks, rapid arpeggios, duty‑cycle modulation, and noise percussion.

Chiptune (also called chip music or 8-bit music) is a style of electronic music created with, or emulating, the programmable sound generator (PSG) and FM chips found in vintage game consoles and home computers such as the NES/Famicom, Game Boy, Commodore 64 (SID), Amiga, Atari ST, and others. The sound palette is defined by simple waveforms (square/pulse, triangle, saw, noise), rapid arpeggios that imply chords on limited channels, pitch bends, duty-cycle modulation, and crunchy noise percussion. These constraints lend chiptune its bright, percussive, and highly melodic character, often evoking early video-game aesthetics. While originally utilitarian—music for games and computer demos—the approach evolved into a standalone art form. Contemporary chiptune spans pure hardware-authentic tracks and hybrid productions that blend chip timbres with modern synthesis, drums, vocals, and mixing techniques.

Electroacoustic music is a broad art-music tradition that integrates recorded acoustic sound and electronically generated or processed sound into coherent musical works. It privileges timbre, gesture, texture, and spatialization over conventional melody-and-harmony song forms, often employing tape manipulation, synthesis, live electronics, and computer-based signal processing. Works are frequently composed for fixed media (stereo or multichannel loudspeakers) and may also involve live performers who are transformed in real time. Concert presentation typically emphasizes spatial diffusion and immersive listening, and the repertoire spans concert works, radio pieces, installations, and soundscape compositions.

Electronic is a broad umbrella genre defined by the primary use of electronically generated or electronically processed sound. It encompasses music made with synthesizers, drum machines, samplers, computers, and studio/tape techniques, as well as electroacoustic manipulation of recorded or synthetic sources. The genre ranges from academic and experimental traditions to popular and dance-oriented forms. While its sonic palette is rooted in electricity and circuitry, its aesthetics span minimal and textural explorations, structured song forms, and beat-driven club permutations. Electronic emphasizes sound design, timbre, and studio-as-instrument practices as much as melody and harmony.

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.

Experimental rock is a broad, exploratory branch of rock music that prioritizes innovation over convention. It stretches rock’s core instrumentation and song forms through unusual timbres, extended techniques, nonstandard tunings, chance procedures, and studio-as-instrument production. Drawing on avant-garde composition, free jazz, minimalism, and electronic/tape music, experimental rock often rejects verse–chorus structures in favor of drones, suites, collage, and improvisation. It embraces dissonance and noise as expressive tools, employs odd or fluid meters, and incorporates non-rock instruments, found sounds, and unconventional recording methods. The result is a lineage of music that treats rock not as a fixed style but as a laboratory for new sound worlds.

IDM (often expanded as "Intelligent Dance Music") is a strand of experimental electronic music that applies the sound palette and production methods of club genres to listening-focused, often home-oriented works. It favors intricate rhythm programming, unusual time signatures, and richly textured sound design, blending ambient atmospheres with techno’s pulse, electro’s syncopation, and breakbeat’s fragmentation. The music often de-emphasizes the dancefloor in favor of headphone detail, algorithmic structure, and timbral exploration. The term itself is contentious—many artists rejected the "intelligent" label—yet it became a convenient tag for the early- to mid‑1990s cluster of Warp, Rephlex, and related scenes that foregrounded complexity, abstraction, and emotional ambiguity.

Indie folk blends the DIY ethos and sonic aesthetics of independent rock with the acoustic instrumentation, intimate storytelling, and melodic simplicity of traditional folk. Timbres are typically warm and organic—fingerpicked acoustic guitars, close-mic’d vocals, subtle percussion, and spare ornamentation from banjo, mandolin, harmonium, or strings. Production often favors natural room ambiance, tape hiss, and gentle compression over glossy polish, creating a sense of proximity and emotional candor. Lyrically, the style is reflective and poetic, focusing on personal narratives, place, nature, spirituality, and memory. Harmony tends to be diatonic and modal, with drones, open tunings, and layered vocal harmonies adding depth. While understated, arrangements can scale into lush, choir-like textures and chamber-folk swells, balancing fragility with grandeur.

Indie rock is a guitar-centered rock music movement defined as much by its independent production and DIY ethos as by specific sonic traits. Early practitioners worked outside major-label systems, distributing music via small labels, college radio, and fanzines, which fostered a culture of experimentation and community. Sonically, indie rock ranges from jangly, melodic songs to abrasive noise-leaning textures, from lo-fi home recordings to meticulously arranged studio works. Hallmarks include inventive song structures, literate or introspective lyrics, and a willingness to blend elements of punk, post-punk, folk rock, and psychedelia. Over time, the term has come to describe both an approach to making music and the broad cluster of styles that grew from the independent rock underground.

Noise is an experimental music genre that uses non-traditional sound sources, distortion, feedback, and extreme dynamics as primary musical materials. Instead of emphasizing melody, harmony, or conventional rhythm, it focuses on texture, density, timbre, and the physical presence of sound. Practitioners sculpt saturated walls of sound, piercing feedback, metallic clatter, contact-mic scrapes, tape hiss, and electronic interference into works that can be confrontational or meditative. Performances often highlight process and immediacy—improvisation, body movement, and site-specific acoustics—while recordings can range from lo-fi cassette overload to meticulously layered studio constructions. Though rooted in early avant-garde ideas, the genre coalesced as a distinct practice in the late 1970s and 1980s, especially through Japan’s ‘Japanoise’ scene, and subsequently influenced numerous styles across industrial, punk-adjacent, and experimental electronic music.

Progressive electronic is a 1970s-born branch of electronic music that applies the exploratory ethos of progressive rock to synthesizers, sequencers, and studio-as-instrument techniques. It favors long-form structures, evolving textures, and thematic development over verse–chorus song forms. Hallmarks include analog synth timbres (Moog, ARP), step-sequenced ostinatos, spacious tape and plate reverbs, and gradual modulation of filters and envelopes. The music often embraces minimalistic repetition, cosmic and cinematic atmospheres, and a sense of narrative journey, connecting it to krautrock’s experimentalism and early ambient’s focus on tone and space.

Vocal jazz is the art of singing within the jazz idiom, emphasizing improvisation, rhythmic nuance, and personal interpretation of songs—often drawn from the Great American Songbook. Singers use jazz phrasing, swing feel, and timbral control to reshape melodies, bend pitches, and tell stories through the lyric. The style ranges from swinging uptempo numbers with scat improvisation to intimate ballads colored by subtle rubato and behind-the-beat delivery. While many vocal jazz performances feature small combos, the genre has also flourished with big band arrangements and sophisticated orchestrations.

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.

Lo-fi indie is a branch of indie rock and pop that embraces the aesthetic of imperfection: home-recorded songs with tape hiss, clipped peaks, room noise, and intimate, unpolished performances. Rooted in the DIY ethos of American underground scenes, it values songwriting, personality, and atmosphere over high-end studio sheen. The sound ranges from fuzzy guitar rock to hushed acoustic ballads, but its core identity lies in intimate vocals, deceptively simple arrangements, and production choices that foreground warmth, immediacy, and a handmade feel. The genre spans from the four-track cassette era of the late 1980s/1990s to laptop-based bedroom projects of the 2010s, maintaining a continuous lineage of self-sufficiency, small labels, and community-driven distribution.

Standards refers to the shared core repertoire of widely known songs in American popular music, especially those from the Great American Songbook. These pieces became "standards" because they have been performed, recorded, and reinterpreted across decades by countless singers and jazz instrumentalists. Typically originating from Tin Pan Alley, Broadway, and Hollywood films of the early–mid 20th century, standards are marked by memorable melodies, refined lyric craft, and harmonically rich progressions that invite interpretation and improvisation. Many use 32‑bar song forms (AABA or ABAC), employ circle‑of‑fifths motion, secondary dominants, and occasional key changes, and work equally well as ballads or swinging uptempo pieces. Today, standards function as a common language for jazz and traditional pop musicians, anchoring jam sessions, vocal recitals, and crossover projects while continuing to inspire new arrangements and recordings.