Jazz poetry is poetry that "demonstrates jazz-like rhythm or the feel of improvisation". The genre also includes poems written about jazz music, musicians, or the jazz milieu. During the 1920s, several poets began to eschew the conventions of rhythm and style; among these were Ezra Pound, T. S. Eliot, and E. E. Cummings. The significance of the simultaneous evolution of poetry and jazz during the 1920s was apparent to many poets of the era, resulting in the merging of the two art forms into jazz poetry. Jazz poetry has long been something of an "outsider" art form that exists somewhere outside the mainstream, having been conceived in the 1920s by African Americans, maintained in the 1950s by counterculture poets like those of the Beat generation, and adapted in modern times into hip-hop music and live poetry events known as poetry slams.
Early jazz poetry did not mimic the sounds and improvisational spirit of jazz. Instead, it heavily referenced the musical form with allusions made to musicians, instruments, and locations key to the burgeoning jazz scene. Poets including Vachel Lindsay (who actually abhorred the "primitive" sound of jazz music) and Mina Loy wrote poetry in this vein. It was with the advent of the Harlem Renaissance that jazz poetry developed into what it is today.
Poets such as Langston Hughes incorporated the syncopated rhythms and repetitive phrases of blues and jazz music into their writing. Many Harlem Renaissance writers were deeply concerned with racial pride and with the creation of purely African-American poetry. Since jazz music was an important part of African-American culture at the time, Hughes and others like him adapted the musical genre to create their own, singularly African-American voices that could easily be distinguished from the work of white poets. Many of Hughes' poems, such as "The Weary Blues", sound almost exactly like popular jazz and blues songs of the period, and vice versa. His work is also highly evocative of spirituals.