Sum Tapes

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.

Boom bap is a foundational East Coast hip hop style defined by hard, punchy drums—“boom” for the kick and “bap” for the snare—laid under sample-based loops from jazz, soul, and funk records. It typically runs around 85–96 BPM, favors gritty, minimally processed textures (often associated with SP‑1200 and early Akai MPC samplers), and foregrounds lyrical skill: multisyllabic rhyme schemes, internal rhymes, storytelling, street reportage, and battle bars. DJ techniques such as scratching and cut‑choruses are common, and arrangements emphasize head‑nod grooves, sparse basslines, and tight bar structures that give MCs room to “sit in the pocket.”

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.

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.

Glitch is an experimental electronic music genre that foregrounds the sounds of technological error—digital clicks, pops, clipping, buffer underruns, CD skipping, software crashes, and bit‑reduction. Rather than hiding artifacts, producers use them as primary musical material, often arranged through extreme micro‑editing and non‑linear sequencing. Texturally, glitch spans austere minimalism to warm, hazy ambience. Rhythms tend to be fragmented and asymmetrical, with sudden cuts, stutters, and silences that create tension and negative space. The palette commonly includes sine‑tone grains, granular clouds, filtered noise, and hyper‑detailed percussive fragments, sometimes sitting over subdued drones or dub‑inflected low end. The style emerged in the late 1990s around labels such as Mille Plateaux, influenced by IDM, minimal techno, and the aesthetics of failure in digital media. It later permeated pop and beat‑driven styles through sound‑design techniques that evoke imperfection and transience.

Hip hop is a cultural and musical movement that emerged from Black, Latino, and Caribbean communities, centering around rapping (MCing), DJing/turntablism, sampling-based production, and rhythmic speech over beats. It prioritizes groove, wordplay, and storytelling, often reflecting the social realities of urban life. Musically, hip hop is built on drum-centric rhythms (from breakbeats to 808 patterns), looped samples, and bass-forward mixes. Lyrically, it ranges from party anthems and braggadocio to political commentary and intricate poetic forms, with flow, cadence, and rhyme density as core expressive tools. Beyond music, hip hop encompasses a broader culture, historically intertwined with graffiti, b-boying/b-girling (breakdance), fashion, and street entrepreneurship, making it both an art form and a global social language.

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.

Lo-fi is a music aesthetic and genre defined by an embrace of audible imperfections—tape hiss, clipping, room noise, distorted transients, and uneven performance—that would be treated as errors in high-fidelity recording. Emerging from the DIY ethos of American indie and punk scenes, lo-fi turns budget constraints and home-recording limitations into a signature sound. Songs are often intimate, direct, and unvarnished, prioritizing immediacy and personality over polish. Typical lo-fi recordings use 4-track cassette or similarly modest setups, simple chord progressions, and understated vocals, spanning rock, folk, pop, and experimental approaches while retaining a homemade warmth and nostalgic patina.

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.

Plunderphonics is a sample-based music practice in which new compositions are made entirely or predominantly from pre‑existing recordings. Rather than using short, unrecognizable snippets as texture, plunderphonic works foreground recognizable materials—pop hits, classical excerpts, commercials, voice-overs—and transform them through juxtaposition, layering, pitch-shifting, time-stretching, and collage. Coined by Canadian composer John Oswald in the mid‑1980s, the term names both a technique and a critical stance that questions authorship, originality, and ownership in the age of reproducible media. Plunderphonics often functions as cultural commentary or satire, drawing attention to how meaning changes when familiar sounds are recontextualized. Stylistically, it ranges from dense cut‑up cacophony to groove-oriented rearrangements that remain danceable and accessible.

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.

Wonky is a lopsided, synth-forward strain of experimental hip hop and UK bass that emerged in the late 2000s. It is defined by off-grid, swaggering drum programming, rubbery sub-bass, and brightly detuned, pitch-bent lead synths that feel as if they wobble in and out of time. Producers often work around 70–80 BPM (or 140–160 BPM in half-time), using heavy swing, microtiming, and syncopation to create a drunken, stumbling groove. Sonically, it blends the head-nod of instrumental hip hop with the sound design sensibilities of IDM, the sub-weight of dubstep, and the neon melodicism associated with Bristol’s "purple" sound. The result is music that is both club-ready and headphone-detailed: playful yet moody, maximal in color but minimal in arrangement, and distinctly characterized by elastic rhythms and glossy, detuned synth textures.

Meme is an internet-native umbrella genre for songs and audio clips that are created for, shaped by, or propelled through online meme culture. It blends humor, parody, and fast-turnaround production with infectious hooks designed to spread rapidly across platforms. Stylistically, meme music is eclectic. It can be rap, pop, EDM, rock, or mashup-driven collage; the common thread is comedic framing, referential lyrics, exaggerated vocal processing, and recognizable samples that cue shared online in-jokes. Tracks often favor short runtimes, bold punchlines, and instantly loopable sections optimized for social media. Because it thrives on virality rather than a fixed instrumentation set, meme functions as a meta-genre. It borrows techniques from mashup culture, YTPMV, soundclown, nightcore, and novelty/comedy traditions, while using platform-specific aesthetics from YouTube, SoundCloud, Vine, and TikTok.