Music is a very important element in the Cowboy Bebop anime and movie. The music in Cowboy Bebop was composed by Yoko Kanno with The Seatbelts, a blues and jazz band. Together they produced seven albums and one live DVD.

Their style is very diverse and ranges from straightforward big band jazz, blues, acoustic ballads, hard rock, country, funk, electronic, hip-hop and experimental compositions/elements. Most of the songs are instrumental and play as background music within the show, with some numbers being accompanied by singers ranging in languages such as Japanese, English, and French.