KING

Kayōkyoku is a broad umbrella of Japanese popular song that dominated the nation’s mainstream from the prewar era through the 1980s, before the term J‑pop became prevalent. It blends Western popular idioms—such as jazz, swing, tango, and later rock and roll—with Japanese melodic sensibilities and lyric themes. Stylistically, kayōkyoku favors clear, memorable melodies, polished vocal delivery, and orchestral or big‑band arrangements. Its songs often use Western song forms (AABA or verse–chorus), while retaining a distinctly Japanese emotional tone rooted in nostalgia, romance, and everyday urban life.

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.

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.

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).

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.

Min'yō refers to the diverse body of Japanese folk songs that arose from everyday life—work, festivals, travel, drinking gatherings, and lullabies—across regions of Japan. The songs are typically strophic, use local dialects, and often include onomatopoeic calls and interjections (kakegoe) such as “sore!” or “yoisho!” that energize group participation. Musically, min'yō commonly employs Japanese pentatonic scales—especially the anhemitonic yo scale and the hemitonic in-sen scale—with characteristic melismatic ornaments (kobushi), tight, bright vocal timbres, and flexible timing that respects ma (expressive space). Accompaniments are traditionally provided by shamisen, shinobue (transverse bamboo flute), shakuhachi, taiko and hand drums, and sometimes koto, with heterophonic textures rather than harmonic progressions. Stylistically, subtypes such as “-bushi” and “-ondo” reflect narrative vs. dance-oriented tendencies, respectively, with well-known regional examples like Soran-bushi (Hokkaidō), Tsugaru folk repertoire (Aomori), and Sado okesa (Niigata).

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.

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.

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.