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Jazz
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Definition
Origins
1890s?1910s
1920s and 1930s
1940s and 1950s
1960s and 1970s
1980s?2000s


Jazz is an American musical art form which originated in the beginning of the 20th century in African American communities in the Southern United States from a confluence of African and European music traditions. The style's West African pedigree is evident in its use of blue notes, improvisation, polyrhythms, syncopation, and the swung note.Alyn Shipton, ''A New History of Jazz'', 2nd. ed., Continuum, 2007, pp. 4?5
From its early development until the present, jazz has also incorporated music from 19th and 20th century American popular music.Bill Kirchner, ''The Oxford Companion to Jazz'', Oxford University Press, 2005, Chapter Two. The word ''jazz'' began as a West Coast slang term of uncertain derivation and was first used to refer to music in Chicago in about 1915; for the origin and history, see Jazz (word).
Jazz has, from its early 20th century inception, spawned a variety of subgenres, from New Orleans Dixieland dating from the early 1910s, big band-style swing music|swing from the 1930s and 1940s, bebop from the mid-1940s, a variety of Latin jazz fusions such as Afro-Cuban jazz|Afro-Cuban and Brazilian jazz from the 1950s and 1960s, jazz fusion|jazz-rock fusion from the 1970s and late 1980s developments such as acid jazz, which blended jazz influences into funk and hip-hop.