George Porter Jr.

Retro soul is a 21st‑century revival of 1960s–1970s American soul and R&B aesthetics. It emphasizes live rhythm sections, punchy horn and string arrangements, call‑and‑response vocals, and vintage recording techniques that evoke classic Motown, Stax, and deep Southern soul. Compared with neo‑soul, retro soul tends to avoid contemporary hip‑hop production, opting instead for period‑correct tones: analogue tape saturation, ribbon mics, plate/spring reverbs, and tightly arranged songs built on strong hooks and groove. The movement coalesced around independent labels and studios (notably Daptone Records) and later crossed over via artists who blended the sound with contemporary pop sensibilities.

Jazz-funk is a groove-forward hybrid of jazz improvisation and harmony with the rhythmic drive and backbeat of funk. It features syncopated basslines, crisp drum patterns, and tight horn or keyboard riffs, often organized around vamping two- or four-bar progressions rather than complex chord changes. The sound is defined by electric instruments—Fender Rhodes, Clavinet, analog and early digital synthesizers, electric bass, and wah-inflected guitar—alongside punchy horn sections and extended solos. Compared to traditional jazz, the harmonic language is leaner but still rich, emphasizing 9ths, 11ths, 13ths, and modal centers (especially Dorian). The music aims for deep, danceable pocket, slick production, and a soulful, urban feel.

Soul blues is a hybrid of electric blues and Southern soul that foregrounds gospel-inflected vocals, horn-driven arrangements, and blues-based song forms. It typically features gritty, emotive singing over mid-tempo grooves, with Hammond organ, punchy horn stabs, and guitar fills weaving around I–IV–V progressions broadened by rich 7ths, 9ths, and 13ths. Lyrically, it focuses on love, heartbreak, resilience, and real-life struggles, delivered with the testifying fervor of the church and the storytelling directness of the blues.

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.