Jazz History: From New Orleans Streets to a Global Musical Language

Origins in New Orleans

According to the U.S. National Park Service, which operates the New Orleans Jazz National Historical Park, the music's early development is most associated with bandleader Charles "Buddy" Bolden, who formed his own group in 1895. Bolden's ensembles moved away from strict, notated dance music toward what historians call "collective improvisation," in which band members built on each other's musical ideas rather than reading fixed parts.

The Park Service traces the music's spread through figures such as Kid Ory, whose band used the Economy Hall venue in New Orleans' Treme neighbourhood as its headquarters from 1908 to 1919, and bassist Bill Johnson, who organised the Original Creole Orchestra in Los Angeles and toured it around the United States between 1914 and 1918. A commercial breakthrough came in February 1917, when the Original Dixieland Jazz Band recorded "Livery Stable Blues" for Victor; within six months of release, the record had sold over a million copies, according to the Park Service, helping attach the word "jazz" to the New Orleans sound nationally.

As opportunities in New Orleans narrowed, musicians migrated north. Cornetist Joe "King" Oliver relocated to Chicago, where, according to the Park Service, he became "an anchor and a magnet" for other New Orleans players. Louis Armstrong joined Oliver's Creole Jazz Band in the summer of 1922, and from November 1925 recorded with his own Hot Five group, including, in February 1926, "Heebie Jeebies," which featured Armstrong's wordless "scat" vocal. By 1927, with his rendition of "Wild Man Blues," Armstrong had broken from collective-ensemble playing and confirmed his status, in the Park Service's account, as jazz's first superstar. Pianist Jelly Roll Morton published "Jelly Roll Blues" in 1915 and later recorded with his Red Hot Peppers group from 1926 to 1930.

Swing, Bebop and the Postwar Turn

By the 1930s, jazz had shifted toward large dance-hall ensembles known as big bands, a period generally called the swing era. In the following decade, smaller groups of musicians developed a faster, harmonically denser style known as bebop. Carnegie Hall's Timeline of African American Music project states that bebop evolved in the 1940s as ballroom dancing declined and venues closed, pushing swing musicians into smaller combos with more creative freedom.

The style was pioneered at Harlem's Minton's Playhouse by trumpeter Dizzy Gillespie, saxophonist Charlie Parker, and pianists Thelonious Monk and Earl "Bud" Powell, according to the same source. Bebop replaced swing's regular phrasing with irregular, rapid-tempo lines and harmonically driven improvisation; drummers Kenny Clarke and Max Roach developed new rhythmic approaches to match it. Carnegie Hall's project quotes writer and activist LeRoi Jones describing bebop as carrying "a distinct element of social protest," tied to musicians' assertion of artistic independence.

Cool Jazz and Fusion

In reaction to bebop's complexity, a quieter, arrangement-focused style called cool jazz emerged in the late 1940s and 1950s. Carnegie Hall's project credits Miles Davis's *Birth of the Cool* sessions (1949–1950), arranged with Gil Evans, as foundational, alongside the Modern Jazz Quartet and West Coast venues such as the Lighthouse Cafe in Hermosa Beach. The style favoured soft tone, understated vibrato and instruments such as French horn and flute, moving some jazz performance from dance halls into concert-hall settings.

In 1969, Davis's *Bitches Brew* combined jazz improvisation with rock and electronic elements, inspired partly by Jimi Hendrix's music, and launched jazz fusion, according to Carnegie Hall's project. The same source lists Herbie Hancock's *Head Hunters* (1973), Weather Report's *Sweetnighter* (1973) and the Mahavishnu Orchestra's *Birds of Fire* (1973) among the era's key fusion recordings, made amid efforts, as pianist Chick Corea put it, to reach "a younger, more emotional audience."

A Global Art Form

Jazz spread internationally well before fusion. Carnegie Hall's Timeline project describes bandleader James Reese Europe introducing early jazz to France during the First World War, with recordings and touring musicians such as Sidney Bechet later deepening its reach there. Japanese musicians encountered the music via touring on transpacific ocean liners during the First World War years, bringing recordings back from San Francisco, according to Carnegie Hall's project. Pianist Toshiko Akiyoshi later became one of the first Japanese musicians to achieve major success in the United States, and Japan went on to host large jazz festivals, including the Yokohama Jazz Promenade.

In the Caribbean and Latin America, musicians including Machito, Mario Bauzá and Chano Pozo fused jazz with Afro-Cuban traditions, with Dizzy Gillespie an active collaborator; this lineage contributed to Brazilian jazz and salsa. In Africa, Congolese musician Franco popularised a "Congolese jazz" blending rumba and dance music in the 1950s–60s, South African Hugh Masekela adapted jazz idioms on his 1968 hit "Grazing in the Grass," and Nigerian musician Fela Kuti drew on jazz big-band arrangements in creating Afrobeat. American musicians also absorbed outside influences in turn — pianist McCoy Tyner incorporated elements of the Japanese koto, while drummers Max Roach and Sun Ra drew on African percussion traditions, per Carnegie Hall's account.

UNESCO formally recognised this cross-border reach in 2011 by proclaiming April 30 as International Jazz Day. Pianist Herbie Hancock, a UNESCO Goodwill Ambassador, has been closely involved in the day's celebrations since its founding, according to UNESCO. UNESCO states the day marks jazz's role in "reinforcing respect for the shared values, universal messages of peace, freedom and solidarity" the music conveys, and describes jazz, born in the United States and rooted in African traditions, as a genre that harnesses the world's diversity, "effortlessly crossing borders and bringing people and cultures closer together." By 2023, the observance was marked in 195 countries, according to UNESCO.

Jazz in Contemporary Music

Jazz's harmonic and rhythmic vocabulary continues to feed directly into other genres, notably hip-hop. In a 2017 NPR segment, pianist Robert Glasper explained why hip-hop producers looking for melodic material tend to turn to jazz recordings, framing jazz's relationship to hip-hop through the practice of sampling — reusing short recorded passages as the basis for new tracks.