Big band

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Big band
Paul Whiteman and his orchestra in 1921
Stylistic origins	Jazz blues American marches classical various rhythmic social dances
Cultural origins	1910s
Derivative forms	Swing progressive jazz Kansas City jazz easy listening space age pop lounge

A big band or jazz orchestra is a type of musical ensemble of jazz music that usually consists of ten or more musicians with four sections: saxophones, trumpets, trombones, and a rhythm section. Big bands originated during the early 1910s and dominated jazz in the early 1940s when swing was most popular. The term "big band" is also used to describe a genre of music, although this was not the only style of music played by big bands.

Big bands started as accompaniment for dancing the Lindy Hop. In contrast to the typical jazz emphasis on improvisation, big bands relied on written compositions and arrangements. They gave a greater role to bandleaders, arrangers, and sections of instruments rather than soloists.