Roscoe Mitchell (born August 3, 1940) is an American composer, jazz instrumentalist, and educator, known for being “a technically superb – if idiosyncratic – saxophonist”. The Penguin Guide to Jazz described him as “one of the key figures” in avant-garde jazz; All About Jazz states that he has been “at the forefront of modern music” for the past 35 years. Critic Jon Pareles in The New York Times has mentioned that Mitchell “qualifies as an iconoclast”. In addition to his own work as a bandleader, Mitchell is known for cofounding the Art Ensemble of Chicago and the Association for the Advancement of Creative Musicians (AACM).

Mitchell was born in Chicago, Illinois. He also grew up in the Chicago area, where he played saxophone and clarinet at around age twelve. His family was always involved in music with many different styles playing in the house when he was a child as well as having a secular music background. His brother, Norman, in particular was the one who introduced Mitchell to jazz. While attending Englewood High School in Chicago, he furthered his study of the clarinet. In the 1950s, he joined the United States Army, during which time he was stationed in Heidelberg, Germany and played in military parades with fellow saxophonists Albert Ayler and Rubin Cooper, the latter of whom, Mitchell commented, “took me under his wing and taught me a lot of stuff”. He also studied under the first clarinetist of the Heidelberg Symphony while in Germany. Mitchell returned to the United States in the early 1960s, relocated to the Chicago area, and performed in a band with Wilson Junior College undergraduates Malachi Favors (bass), Joseph Jarman, Henry Threadgill, and Anthony Braxton (all saxophonists). Mitchell also studied with Muhal Richard Abrams and played in his band, the Muhal Richard Abrams’ Experimental Band, starting in 1961. In 1965, Mitchell was one of the first members of the non-profit organization Association for the Advancement of Creative Musicians (AACM) along with Jodie Christian (piano), Steve McCall(drums), and Phil Cohran (composer). The following year Mitchell, Lester Bowie (trumpet), Kalaparusha Maurice McIntyre (tenor saxophone), Favors, Lester Lashley (trombone), and Alvin Fielder(drums), recorded their first studio album, Sound. The album was “a departure from the more extroverted work of the New York-based free jazz players” due in part to the band recording with “unorthodox devices” such as toys and bicycle horns.