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 stated in 2004 that he had been “at the forefront of modern music” for more than 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.

From 1967 Mitchell, Bowie, Favors and, on occasion, Jarman performed as the Roscoe Mitchell Art Ensemble, then the Art Ensemble, and finally in 1969 were billed as the Art Ensemble of Chicago. The group included Phillip Wilson on drums for short span before he joined Paul Butterfield‘s band. The group lived and performed in Europe from 1969 to 1971, though they arrived without any percussionist after Wilson left. To fill the void, Mitchell commented that they “evolved into doing percussion ourselves”. The band did eventually get a percussionist, Don Moye, who Mitchell had played with before and was living in Europe at that time. For performances, the band often wore brilliant costumes and painted their faces. The Art Ensemble of Chicago have been described as becoming “possibly the most highly acclaimed jazz band” in the 1970s and 1980s.