On February 26, 1917, a five-piece white group called the Original Dixieland Jass Band recorded two sides for Victor Records — the first commercial jazz recording. The ODJB had drifted up from New Orleans through Chicago; their style approximated the African-American music they had grown up alongside in Storyville, the legalized red-light district where jazz had crystallized for two decades. The record sold over a million copies. Within five years jazz was the dominant popular music of the United States; within ten, of every urban centre touched by the gramophone. The politics of that transmission — white musicians and white-owned labels bringing Black music to white audiences while the originators were paid almost nothing — has been the field's contested origin story ever since.
Jazz crystallized in New Orleans between 1895 and 1917 out of four converging tributaries. Blues contributed the twelve-bar form, blue-note inflection, and a call-and-response heritage traceable through field hollers and spirituals to West African practice. Ragtime — anchored on Scott Joplin's Maple Leaf Rag of 1899 — contributed syncopated piano against a steady left-hand pulse. Brass-band traditions contributed the front-line instruments and the polyphonic ensemble texture. Storyville, the legalized red-light district that operated from 1897 to 1917, provided the nightly commercial scaffolding without which none of the experiments would have been heard. By the time the Original Dixieland Jass Band cut its 1917 record, jazz had its identifying features: syncopation against a four-beat pulse, swing time, individual instrumental voicing, and group improvisation.
The stylistic eras that followed read, in retrospect, as a sequence of reactions against the prior generation's orthodoxy. Hot jazz crystallized around Louis Armstrong's late-1920s Hot Five and Hot Seven sides — the trumpet cadenza opening West End Blues in 1928 was the first virtuoso solo statement on record. Swing's big bands turned the form into mass dance music for a decade with Duke Ellington and Billy Strayhorn on one side and Benny Goodman's 1938 Carnegie Hall concert legitimizing jazz as art music on the other; bebop's response from Charlie Parker, Dizzy Gillespie, and Thelonious Monk in the mid-1940s doubled tempos and multiplied chord substitutions until the music could no longer function as dance. Cool jazz answered bebop's intensity with Miles Davis's Birth of the Cool; modal jazz answered cool's harmonic constraints with Davis's Kind of Blue in 1959, which replaced rapid chord changes with extended modal passages and remains the best-selling jazz album of all time. Free jazz with Ornette Coleman and fusion with Davis's Bitches Brew pushed each subsequent generation further from the form's commercial centre. The principle that survives every era is the one Storyville's musicians established: improvisation as real-time invention against shared structure.
Jazz education has been formalized in conservatories since the 1970s — Berklee, Juilliard Jazz, New England Conservatory, Manhattan School — producing a steady stream of technically formidable players who circulate through a global club-and-festival circuit. Living masters in 2025 include Wynton Marsalis (Lincoln Center Jazz Orchestra), Kamasi Washington (whose 2015 The Epic had unusual crossover audience), Robert Glasper, and Cécile McLorin Salvant. Hip-hop sampled jazz extensively across the 1990s — A Tribe Called Quest, Pete Rock, J Dilla — and Kendrick Lamar's To Pimp a Butterfly (2015) returned the favor by recruiting Glasper, Washington, and Thundercat into the production team. AI jazz generation can imitate Parker's phrasing patterns at short scales but struggles with the band-interaction layer — the way musicians listen and respond to each other in real time. That layer is precisely what makes jazz jazz, and it is the part current models do not yet capture.