Jazz rap is a sub-genre of hip hop which incorporates jazz influences, developed in the late 1980s and early 1990s. The lyrics are often based on political consciousness, Afrocentricity, and general positivism.Allmusic writes that the genre "was an attempt to fuse African-American music of the past with a newly dominant form of the present, paying tribute to and reinvigorating the former while expanding the horizons of the latter". Musically, the rhythms have been typically those of hip hop rather than jazz, over which are placed repetitive phrases of jazz instrumentation: trumpet, double bass, etc. The amount of improvisation varies between artists: some groups improvise lyrics and solos, while many of them do not.

Peter Shapiro, in his Rough Guide to Hip-Hop (2nd ed. London: Rough Guides, 2005) lists Louis Armstrong's 1925 recording of "Heebie Jeebies" in his timeline of hip hop. In the 70s, The Last Poets, Gil Scott-Heron, and The Watts Prophets placed spoken word and rhymed poetry over jazzy backing tracks. There are also parallels between jazz and the improvised phrasings of freestyle rap. Despite these disparate threads, jazz rap did not coalesce as a genre until the late 80s.

Jazz is a musical style that originated at the beginning of the 20th century in black communities in the Southern United States.

It was born out of a mix of African and European music traditions. Its African pedigree is evident in its use of blue notes, improvisation, polyrhythms, syncopation and the swung note. From its early development until the present day jazz has also incorporated music from American popular music.

As the music has developed and spread around the world it has drawn on many different national, regional and local musical cultures giving rise, since its early 20th century American beginnings, to many distinctive styles: New Orleans jazz dating from the early 1910s, big band swing, Kansas City jazz and Gypsy jazz from the 1930s and 1940s, bebop from the mid-1940s and on down through West Coast jazz, cool jazz, avant-garde jazz, Afro-Cuban jazz, modal jazz, free jazz, Latin jazz in various forms, soul jazz, jazz fusion and jazz rock, smooth jazz, jazz-funk, punk jazz, acid jazz, ethno jazz, jazz rap, cyber jazz, Indo jazz, M-Base, nu jazz, urban jazz and other ways of playing the music.

Rapping (also known as emceeing,MCing,spitting (bars), or rhyming) refers to "spoken or chanted rhyming lyrics". The art form can be broken down into different components, as in the book How to Rap where it is separated into “content”, “flow” (rhythm and rhyme), and “delivery”. Rapping is distinct from spoken word poetry in that it is performed in time to a beat.

Rapping is a primary ingredient in hip hop music and reggae, but the phenomenon predates hip hop culture by centuries. It can also be found in alternative rock such as that of Cake and the Red Hot Chili Peppers. Rapping is also used in Kwaito music, a genre that originated in Johannesburg, South Africa and is composed of hip hop elements. Rapping can be delivered over a beat or without accompaniment. Stylistically, rap occupies a gray area among speech, prose, poetry, and song. The use of the word to describe quick speech or repartee long predates the musical form, meaning originally "to hit". The word had been used in British English since the 16th century, and specifically meaning "to say" since the 18th. It was part of the African American dialect of English in the 1960s meaning "to converse", and very soon after that in its present usage as a term denoting the musical style. Today, the terms "rap" and "rapping" are so closely associated with hip hop music that many use the terms interchangeably.