Bill Stewart

Post-bop is a modern jazz style that emerged in the early-to-mid 1960s as a synthesis of bebop, hard bop, modal jazz, cool jazz, third stream ideas, and the experimental impulses of the avant‑garde. It typically features acoustic small ensembles (often trumpet, saxophone, piano, bass, and drums) interacting with highly flexible time, non-functional or modal harmony, and motivic development rather than relying strictly on bebop chord cycles. Its sound balances structure and freedom: forms are clearly composed and often intricate, but improvisers stretch time feels, reharmonize on the fly, and use advanced harmonic colors such as quartal voicings, pedal points, and chromatic planing. Canonical touchstones include Miles Davis’s mid‑’60s Second Great Quintet (e.g., E.S.P., Nefertiti), Wayne Shorter’s Speak No Evil, Herbie Hancock’s Maiden Voyage, Andrew Hill’s Point of Departure, and many mid‑’60s Blue Note recordings that pushed beyond hard bop.

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 drums refers to the art and practice of playing the drum set in jazz, where the drummer shapes time, texture, and dynamics for improvising ensembles. It is characterized by a swinging ride-cymbal pulse (the “spang‑a‑lang” pattern), syncopated “comping” on snare and bass drum, light hi‑hat on beats 2 and 4, and extensive use of brushes. Jazz drummers prioritize touch, nuance, and interaction—coloring the music with cymbal tones, cross‑stick, ghost notes, and dynamic swells while responding in real time to soloists. From early New Orleans ensembles to bebop, modal, free, and fusion contexts, jazz drums evolved into a virtuosic, conversational role: moving the time to the ride cymbal (Kenny Clarke), expanding independence and melodic phrasing (Max Roach), and introducing polyrhythms, metric modulation, and global rhythmic vocabularies.