Astigmatic Records

Afrobeat is a horn-driven, polyrhythmic, and politically charged style that emerged in Nigeria, spearheaded by bandleader Fela Kuti and drummer Tony Allen. It fuses West African highlife and juju with American funk, jazz, and soul to create extended, hypnotic grooves. Typical tracks revolve around interlocking guitar and keyboard ostinatos, elastic bass vamps, dense percussion (shekere, congas, agogô, cowbell), and tightly arranged horn riffs that punctuate the beat. Vocals often use call-and-response and socially conscious lyrics, delivered in English, Nigerian Pidgin, or Yoruba. Harmonically sparse but rhythmically intricate, Afrobeat prioritizes feel: long, evolving arrangements, richly syncopated drum patterns, and sectional dynamics that spotlight solos and collective interplay.

Juke is a fast, sample-driven club style from Chicago that runs around 150–160 BPM, built on jagged 808/909 drum programming, booming sub‑bass, and looped vocal chants. It keeps the raw, minimal, party‑starting energy of ghetto house but pushes the tempo and rhythmic syncopation much further. Tracks often rely on short, repetitive hooks and call‑and‑response phrases, claps on the backbeat, and tom/snare rolls that stutter and pivot around a steady 4/4 grid. Harmonic content is sparse—brief chord stabs, simple bass riffs, and plenty of negative space—so that dancers can lock into the drums. Juke is closely related to, and historically precedes, Chicago footwork; where juke is the more club‑aligned, chant‑heavy form, footwork became more abstract and battle‑oriented.

Jungle is a fast, breakbeat-driven electronic music genre that emerged in the UK in the early 1990s. It is characterized by heavily chopped and re-sequenced funk drum breaks (most famously the Amen, Think, and Apache breaks), deep sub-bass rooted in reggae and dub, and frequent use of ragga and dancehall vocals. Typically around 160–175 BPM, jungle emphasizes syncopation, polyrhythms, ghost-note snare articulations, and swung grooves. Production often features time‑stretching artifacts, pitch‑shifting, rewinds, sirens, and dub‑style effects, creating a kinetic, raw, and rhythmic sound world. While closely related to drum and bass, jungle retains a distinct identity through its reggae/dancehall influence, looser and more chopped breakbeats, rough-and-ready sample aesthetics, and sound system culture sensibility.

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.”

Broken beat (often shortened to "bruk") is a rhythm-forward, jazz- and funk-inflected style of club music that emerged from West London. Its defining feature is a heavily syncopated, off‑kilter drum feel that fractures straight 4/4 time without abandoning dance‑floor energy. Producers combine swung, jittery percussion with warm, soulful chords, boogie/funk basslines, and frequent live instrumentation. The harmony language often borrows from jazz (extended chords, rich voicings), while the groove draws from house, drum & bass, UK garage, hip hop, and boogie. Typical tempos sit around 118–130 BPM, with pronounced swing and micro‑timing that create a lurching, propulsive pulse.

Classical music is the notated art-music tradition of Europe and its global descendants, characterized by durable forms, carefully codified harmony and counterpoint, and a literate score-based practice. The term “classical” can refer broadly to the entire Western art-music lineage from the Medieval era to today, not just the Classical period (c. 1750s–1820s). It privileges long-form structures (such as symphonies, sonatas, concertos, masses, and operas), functional or modal harmony, thematic development, and timbral nuance across ensembles ranging from solo instruments to full orchestras and choirs. Across centuries, the style evolved from chant and modal polyphony to tonal harmony, and later to post-tonal idioms, while maintaining a shared emphasis on written notation, performance practice, and craft.

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 hip hop (often called avant-rap or left-field hip hop) pushes rap beyond conventional song forms, sound palettes, and production techniques. It hybridizes boom‑bap and contemporary hip hop rhythms with ideas from industrial, noise, IDM, electroacoustic music, and free jazz, favoring timbral risk‑taking, collage, and abstraction over radio‑oriented polish. Producers and MCs in this style disrupt expectations with unusual meters, asymmetric loops, microtiming, extreme dynamics, and heavy sound design (distortion, granular and spectral processing, tape manipulation). Vocals may range from conventional rapping to spoken word, chant, screams, or heavily processed deliveries. The result foregrounds texture, mood, and concept as much as groove and lyrical content.

Footwork (often called juke or Chicago juke) is a high‑velocity, sample‑driven form of electronic dance music that emerged from Chicago’s battle‑dance culture. Built around stuttering, off‑grid percussion at roughly 160 BPM, it uses chopped vocal snippets, booming sub‑bass, and rapid toms, claps, and snares arranged in highly syncopated patterns that are not locked to a constant 4/4 kick. Producers frequently slice fragments of rap, R&B, pop, and soul into call‑and‑response hooks that interact with dancers on the floor. The result is a tense, kinetic sound designed for competitive circles as much as for clubs and headphones.

Free jazz is a radical branch of jazz that rejects fixed chord progressions, strict meter, and conventional song forms in favor of collective improvisation, textural exploration, and spontaneous interaction. Musicians prioritize timbre, dynamics, and gesture as much as pitch and harmony, often using extended techniques (multiphonics, overblowing, prepared piano) and unconventional sounds. While rooted in the blues and earlier jazz vocabularies, free jazz frees improvisers from pre-set harmonic cycles, allowing lines to unfold over tonal centers, shifting modes, drones, or complete atonality. Rhythm sections may float without a steady pulse, or drive with layered polyrhythms and “energy playing.” The result ranges from contemplative soundscapes to cathartic, high-intensity eruptions. Culturally, the genre intersected with the civil rights era and broader avant-garde movements, emphasizing autonomy, community, and new possibilities for musical expression.

Funk is a rhythm-forward African American popular music style that centers on groove, syncopation, and interlocking parts. Rather than emphasizing complex chord progressions, funk builds tight, repetitive vamps that highlight the rhythm section and create an irresistible dance feel. The genre is marked by syncopated drum patterns, melodic yet percussive bass lines, choppy guitar "chanks," punchy horn stabs, call‑and‑response vocals, and a strong backbeat. Funk’s stripped-down harmony, prominent use of the one (accenting the downbeat), and polyrhythmic layering draw deeply from soul, rhythm and blues, jazz, gospel, and African rhythmic traditions. From James Brown’s late-1960s innovations through the expansive P-Funk universe and the slicker sounds of the 1970s and 1980s, funk has continually evolved while seeding countless other genres, from disco and hip hop to house and modern R&B.

Hindustani classical is the North Indian branch of the Indian classical tradition, centered on the concepts of raga (melodic framework) and tala (cyclical rhythm). It emphasizes improvisation within strict aesthetic and grammatical boundaries, unfolding a raga through a gradual, architected performance arc from free-rhythm exploration to metrically grounded elaboration. Performances typically proceed through an alap (slow, non-metrical exposition), jor and jhala (rhythmic intensification on plucked instruments), and a composed piece—bandish or gat—set to a tala cycle, followed by improvisations (vistar, tans, bol-bant) that resolve emphatically on the sam (first beat). Signature ornaments such as meend (glides), gamak (oscillation), and andolan (slow vibrato) articulate microtonal nuance (shruti). The style encompasses vocal genres like dhrupad and khyal, and instrumental idioms on sitar, sarod, sarangi, bansuri, and shehnai, supported by a sustaining drone (tanpura) and tabla or pakhawaj accompaniment. Beyond the concert hall, Hindustani classical has deeply informed sub-classical and popular forms across South Asia and, through mid-20th-century cultural exchange, popular and art music worldwide.

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.

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.

Instrumental hip hop is a producer-driven form of hip hop that foregrounds beats, textures, and sampling rather than rapping. It typically centers on loop-based drum patterns, chopped samples from soul, jazz, funk, and library records, and a head‑nodding groove designed for deep listening as much as for DJs and MCs. The style emphasizes rhythm, timbre, and mood—swinging drums, dusty vinyl crackle, and melodic fragments treated as musical motifs. While rooted in classic boom bap aesthetics, instrumental hip hop ranges from minimal and meditative to densely collaged and psychedelic, reflecting both crate-digging traditions and studio experimentation.

Jazz is an improvisation-centered music tradition that emerged from African American communities in the early 20th century. It blends blues feeling, ragtime syncopation, European harmonic practice, and brass band instrumentation into a flexible, conversational art. Defining features include swing rhythm (a triplet-based pulse), call-and-response phrasing, blue notes, and extended harmonies built on 7ths, 9ths, 11ths, and 13ths. Jazz is as much a way of making music—spontaneous interaction, variation, and personal sound—as it is a set of forms and tunes. Across its history, jazz has continually hybridized, from New Orleans ensembles and big-band swing to bebop, cool and hard bop, modal and free jazz, fusion, and contemporary cross-genre experiments. Its influence permeates global popular and art music.

Jazz fusion (often simply called "fusion") blends the improvisational language and harmonic richness of jazz with the amplified instruments, grooves, and song forms of rock, funk, and R&B. It typically features electric guitars, electric bass or fretless bass, Rhodes electric piano, clavinet, analog and digital synthesizers, and a drum kit playing backbeat- and syncopation-heavy patterns. Hallmarks include extended chords and modal harmony, complex and shifting meters, brisk unison lines, virtuosic improvisation, and a production aesthetic that embraces effects processing and studio craft. The style ranges from fiery, aggressive workouts to polished, atmospheric textures, often within the same piece. Emerging in the late 1960s and flourishing through the 1970s, jazz fusion became a bridge between jazz audiences and rock/funk listeners, shaping later styles such as jazz-funk, smooth jazz, nu jazz, and parts of progressive and technical rock/metal.

Modal jazz is a style of jazz in which improvisation and composition are organized around musical modes rather than rapid chord changes. Instead of navigating dense harmonic progressions (as in bebop and hard bop), modal jazz often sustains a single scale or a small set of modes for long stretches, creating a spacious, open canvas for melodic development. Hallmarks include slow harmonic rhythm, pedal points or drones, vamp-based forms, and quartal/quintal voicings on piano and guitar. Improvisers focus on color, contour, and motivic variation inside a mode (e.g., Dorian, Mixolydian, Aeolian, Lydian), rather than outlining constant chord substitutions. The sound is typically lyrical, floating, and contemplative, but it can also be turbulent and intense when rhythm section dynamics and modal tension are pushed. Canonical examples include Miles Davis’s Kind of Blue (1959) and John Coltrane’s modal vehicles such as Impressions and My Favorite Things.

Poetry (as a recorded genre) centers on the spoken or performed recitation of verse, foregrounding voice, diction, rhythm, and imagery over conventional song structure. Performances may be entirely unaccompanied or framed by sparse accompaniment such as piano, strings, jazz combos, drones, or subtle sound design. Unlike broader spoken word, which can include storytelling, monologues, and comedy, poetry recordings focus on literary verse—metered, rhymed, or free—delivered with attention to prosody and poetic form. Releases range from archival readings by canonical poets to contemporary performance sets recorded in studios, classrooms, libraries, and clubs. The listening experience often emphasizes intimacy and textual clarity: microphones capture breath, cadence, and silence, while arrangements (if any) remain secondary to the poem’s language and pacing.

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.

Spiritual jazz is a strand of modern jazz that seeks transcendence through sound, blending free improvisation, modal frameworks, and non‑Western musical concepts to evoke the sacred, the cosmic, and the ecstatic. It often features long, open forms; drones and pedal points; polyrhythmic percussion; and timbres associated with ritual or meditation (harp, flutes, bells, tanpura). Melodic language leans toward modes and scales from African, Middle Eastern, and South Asian traditions alongside blues inflection. The mood can shift from contemplative prayer to cathartic release, and vocal elements may include chants, mantras, spoken word, or invocations aligned with spiritual or philosophical themes.

Spoken word is a performance-centered genre where text—poems, monologues, stories, or manifestos—is delivered aloud with musicality in voice rather than through singing. It may be entirely a cappella or accompanied by sparse instrumentation (often jazz combos, ambient textures, or minimal electronics) that frames the cadence and rhetoric of the performer. The emphasis is on language: prosody, pacing, imagery, and argument. Pieces often explore personal narratives, social critique, and political themes, drawing on techniques such as internal rhyme, alliteration, and repetition. While recordings exist, the tradition is fundamentally live, prioritizing immediacy, audience engagement, and oratorical presence.

Rap is a vocal music style built on the rhythmic, rhymed, and often improvised spoken delivery of lyrics over a beat. It emphasizes flow, cadence, wordplay, and narrative, and is commonly performed over sampled or programmed drum patterns and loops. Emerging from block parties and sound-system culture in the Bronx, New York City, rap became the core vocal expression of hip hop culture alongside DJing, breakdancing, and graffiti. While it is closely linked to hip hop, rap as a technique and genre has also crossed into pop, rock, electronic, and global regional scenes. Musically, rap favors strong drum grooves (breakbeats, 808 patterns), sparse harmony, and loop-based structures that foreground the MC’s voice. Lyrically, it spans party chants and battle brags to intricate internal rhymes, social commentary, reportage, and autobiography.