Interdisc

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.

A ballad is a narrative song form that tells a story in simple, singable stanzas, traditionally using quatrains in ballad meter (alternating lines of iambic tetrameter and trimeter with an ABCB rhyme scheme). Ballads typically recount dramatic events—love, betrayal, tragedy, murder, the supernatural—or notable historical incidents. Early ballads were often sung unaccompanied or with minimal accompaniment, carried by memorable, modal melodies and refrains that aided oral transmission. Over time, the term also came to describe slow, sentimental popular songs in the 20th century, but the core of the genre remains the storytelling focus and strophic, easily learned structure. Ballads are central to the English- and Scots-language folk traditions, migrated to North America where they flourished in Appalachian singing, and continue to be performed, adapted, and reinterpreted in contemporary folk and roots scenes.

Latin (as a genre label) is a broad umbrella used by the recording industry to categorize popular music rooted in Latin America, the Caribbean, and the Iberian world, often characterized by syncopated Afro-diasporic rhythms, dance-forward grooves, and lyrics primarily in Spanish or Portuguese. As a marketplace category that took shape in the mid-20th century United States, it gathers diverse traditions—Afro-Cuban, Brazilian, Mexican, and Caribbean styles—into a shared space. In practice, "Latin" spans everything from big-band mambo and bolero ballads to contemporary pop, rock, hip hop, and dance fusions produced by artists of Latin American heritage.

Latin ballad (balada romántica) is a romantic, slow-tempo pop song style that emerged across Latin America in the 1960s, blending the melodic intimacy of the Cuban bolero with the orchestral sweep and songcraft of European (especially Italian and Spanish) ballads. Its hallmarks are emotive lead vocals, lush string or keyboard arrangements, clear verse–pre‑chorus–chorus structures, and lyrics centered on love, longing, heartbreak, and reconciliation. Songs often sit around 60–90 BPM, use diatonic pop progressions with tasteful modulations, and may feature a climactic key change to heighten drama. The genre became a radio mainstay and a soundtrack to telenovelas, shaping the sound of Latin popular music for decades and influencing salsa romántica, grupera, and modern Latin pop balladry.

Latin pop is mainstream pop music performed primarily in Spanish (and sometimes Portuguese) that blends contemporary pop songwriting with Latin American and Iberian rhythms, harmonies, and vocal stylings. It typically features verse–pre-chorus–chorus forms, catchy hooks, polished production, and a balance between rhythmic drive and romantic lyric themes. Classic Latin pop often leans on bolero- and ballad-informed melodies and soft-rock textures, while modern Latin pop readily incorporates dance-pop, electronic, and urbano elements (such as reggaeton-influenced grooves) without losing its sing-along pop core.

Latin rock blends the instrumentation and attitude of rock with Afro‑Latin and Caribbean rhythms, percussion, and song forms. Typical bands combine electric guitars, bass, and drum kit with congas, bongos, timbales, and hand percussion, creating a driving, danceable groove grounded in the clave. Vocals may be in Spanish, Portuguese, Spanglish, or English, and lyrics range from love songs and urban life to social and political commentary. Harmonically, Latin rock draws from blues/rock progressions but frequently incorporates modal colors (Dorian, Mixolydian) and montuno‑style vamps borrowed from salsa and Afro‑Cuban traditions. The result sits comfortably between club‑ready rhythm and arena‑sized rock energy.

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.

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).

Folk rock is a fusion genre that blends the narrative lyricism, modal melodies, and acoustic timbres of traditional folk with the backbeat, amplification, and song structures of rock. It typically pairs acoustic or traditional instruments (acoustic guitar, mandolin, fiddle) with a rock rhythm section (electric guitar, bass, drums), often featuring chiming 12‑string guitar textures, close vocal harmonies, and socially conscious or storytelling lyrics. The result ranges from intimate, reflective ballads with a steady backbeat to more anthemic, roots‑driven rock. Emerging in the mid‑1960s through artists such as Bob Dylan and The Byrds, folk rock became a gateway for traditional and roots materials to enter mainstream popular music, and it seeded later movements from country rock and Americana to jangle pop and modern indie folk.

Hard rock is a loud, riff-driven style of rock music built around heavily amplified electric guitars, a powerful rhythm section, and assertive vocals. Songs typically center on memorable, blues-based guitar riffs, strong backbeats, and energetic, often shouted or belted choruses. The genre emphasizes power, groove, and visceral impact over intricate harmony or extended improvisation. Distortion, power chords, pentatonic melodies, and call‑and‑response between vocals and guitar are core traits, while lyrical themes often explore rebellion, lust, swagger, escape, and cathartic release.

Heavy metal is a loud, guitar-driven style of rock defined by heavily distorted riffs, thunderous drums, and powerful vocals. Its musical language emphasizes minor modes, modal (Aeolian, Phrygian) riffing, and energy over groove, often featuring virtuosic guitar solos and dramatic dynamic contrasts. Emerging from late-1960s blues rock and psychedelic experimentation, heavy metal codified a darker, heavier sound with bands like Black Sabbath, Deep Purple, and Led Zeppelin. The genre values weight, intensity, and grandeur—whether through plodding, doom-laden tempos or galloping, high-energy rhythms—paired with themes that range from personal struggle and social critique to fantasy, mythology, and the occult.

Jazz rock is a hybrid style that merges the improvisational language and harmonic richness of jazz with the amplified energy, backbeat, and song forms of rock. It typically features electric guitar, bass, and drums alongside jazz-oriented instruments such as saxophone, trumpet, and keyboards, often arranged in horn sections. Extended chords, syncopation, and improvisation coexist with catchy riffs and driving grooves, yielding music that is both virtuosic and accessible. While closely related to jazz fusion, jazz rock generally keeps a stronger tie to rock songcraft and backbeat-centered rhythms.

Metal (often used to mean heavy metal in its broad, umbrella sense) is a loud, guitar-driven style of rock defined by high-gain distortion, emphatic and often martial rhythms, and a dense, powerful low end. It foregrounds riff-based songwriting, dramatic dynamics, virtuosic guitar solos, and commanding vocals that range from melodic wails to aggressive snarls and growls. Harmonically, metal favors minor modes, modal color (Aeolian, Phrygian), chromaticism, and tritone-inflected tension, while thematically it explores power, mythology, the occult, social critique, fantasy, and existential subjects. While adjacent to hard rock, metal typically pushes amplification, distortion, precision, and thematic intensity further, forming a foundation for many specialized subgenres.

Pop is a broad, hook-driven style of popular music designed for wide appeal. It emphasizes memorable melodies, concise song structures, polished vocals, and production intended for radio, charts, and mass media. While pop continually absorbs elements from other styles, its core remains singable choruses, accessible harmonies, and rhythmic clarity. Typical forms include verse–pre-chorus–chorus, frequent use of bridges and middle-eights, and ear-catching intros and outros. Pop is not defined by a single instrumentation. It flexibly incorporates acoustic and electric instruments, drum machines, synthesizers, and increasingly digital production techniques, always in service of the song and the hook.

Pop rock blends the hook-focused immediacy of pop with the instrumentation and drive of rock. It prioritizes catchy melodies, concise song structures, and polished production while retaining guitars, bass, and drums as core elements. Typical pop rock tracks use verse–pre-chorus–chorus forms, strong vocal harmonies, and memorable riffs. The sound ranges from jangly and bright to mildly overdriven and arena-ready, aiming for radio-friendly appeal without abandoning rock’s rhythmic punch.

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.

Punk is a fast, abrasive, and minimalist form of rock music built around short songs, stripped-down instrumentation, and confrontational, anti-establishment lyrics. It emphasizes DIY ethics, raw energy, and immediacy over virtuosity, often featuring distorted guitars, shouted or sneered vocals, and simple, catchy melodies. Typical songs run 1–3 minutes, sit around 140–200 BPM, use power chords and basic progressions (often I–IV–V), and favor live, unpolished production. Beyond sound, punk is a cultural movement encompassing zines, independent labels, political activism, and a fashion vocabulary of ripped clothes, leather, and safety pins.

Punk rock is a fast, raw, and stripped‑down form of rock music that foregrounds energy, attitude, and the DIY ethic over technical polish. Songs are short (often 90–180 seconds), in 4/4, and driven by down‑stroked power‑chord guitars, eighth‑note bass, and relentless backbeat drumming. Vocals are shouted or sneered rather than crooned, and lyrics are direct, often political, anti‑establishment, or wryly humorous. Production is intentionally unvarnished, prioritizing immediacy and live feel over studio perfection. Beyond sound, punk rock is a culture and practice: independent labels, fanzines, all‑ages venues, self‑organized tours, and a participatory scene that values inclusivity, affordability, and self‑reliance.

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.

Rockabilly is one of the earliest styles of rock and roll, fusing the twang and storytelling of Southern country ("hillbilly") with the driving backbeat and boogie of rhythm & blues and jump blues. It is marked by slap‑back echo on vocals and guitar, slapping upright bass, twangy hollow‑body electrics, and energetic, danceable grooves. The classic rockabilly sound emerged from mid‑1950s Memphis studios such as Sun Records, where minimal drum kits (or none at all) mixed with percussive bass and bright, overdriven guitars. Songs are typically short, hooky, and built on 12‑bar blues or simple I–IV–V progressions, with lyrics about love, cars, dancing, and youthful rebellion.

Ska is a Jamaican popular music style characterized by a brisk 4/4 groove, off‑beat guitar or piano upstrokes (the “skank”), walking bass lines, and punchy horn riffs. Emerging in late‑1950s Kingston dancehalls, ska fused local mento and calypso with American rhythm & blues and jazz, creating a lively sound that celebrated independence‑era optimism and street culture. Across time, ska evolved through distinct waves: the original Jamaican ska of the early 1960s, the racially integrated and politically aware 2 Tone movement in late‑1970s Britain, and the third‑wave explosion in the 1990s that blended ska with punk energy around the world.

Speed metal is a fast, precision-driven branch of heavy metal that crystallized at the turn of the 1980s. It emphasizes aggressive tempos, tightly synchronized riffing, and virtuosic lead guitar work, while generally retaining melodic, often clean or strident vocals. Compared with thrash metal, speed metal tends to be less percussive and more melodic, favoring galloping rhythms, twin-guitar harmonies, and classic verse–chorus structures. Drums often employ rapid double-time feels and double-bass patterns, while bass frequently mirrors the rhythm guitar to reinforce propulsion. Lyrical themes range from rebellion and street realism to fantasy, warfare, and sci‑fi.

Street punk is a raw, anthemic strain of punk that crystallized among working‑class youth in late 1970s Britain. It prioritizes loud guitars, chant‑along choruses, and direct, socially grounded lyrics over artiness or virtuosity. Musically, it sticks to fast 4/4 beats, tight down‑stroke power‑chord riffs, and simple, memorable hooks designed for group vocals. Aesthetically it emphasizes a gritty, street‑level identity—leather, denim, studs, spikes—matching songs about daily struggle, anti‑authoritarian sentiment, and community unity. While it overlaps with Oi!, street punk is often broader and more sonically aggressive, aligning with the UK82 wave and helping bridge first‑wave punk to harder, faster developments in the 1980s.

Twist is an early 1960s dance-oriented style of rock and roll/R&B built around a driving 4/4 backbeat, simple chord changes, and lyrics that explicitly invite the audience to dance. Its signature songs—sparked by Hank Ballard’s “The Twist” and made world-famous by Chubby Checker’s 1960 cover—feature medium-to-up-tempo grooves, strong snare accents on beats two and four, call‑and‑response hooks, and concise instrumental breaks (often saxophone or guitar). The music is purpose-built for the iconic “twist” dance: feet planted, hips and torso swiveling, with a clean, straight‑eighth feel rather than a swing shuffle. Beyond the U.S., the twist became a global craze, inspiring localized variants and feeding into contemporaneous youth pop movements across Europe and Latin America.

World music is a broad, industry-coined umbrella for traditional, folk, and contemporary popular styles from around the globe that fall outside the Anglo-American pop mainstream. The label emerged in the 1980s as a retail and marketing category to group diverse regional musics for international distribution. Musically, it spans acoustic and electric instrumentation; modal, pentatonic, and microtonal pitch systems; and rhythms ranging from cyclical grooves and polyrhythms to asymmetrical meters. While the term can obscure local specificity, it also facilitated cross-cultural collaboration, festivals, and recordings that brought regional genres to wider audiences.