According to Wikipedia,
Muhal Richard Abrams was an American educator, administrator, composer, arranger, clarinetist, cellist, and jazz pianist in the free jazz medium. He recorded and toured the United States, Canada and Europe with his orchestra, sextet, quartet, duo and as a solo pianist. His musical affiliations constitute a "who's who" of the jazz world, including Max Roach, Dexter Gordon, Eddie "Lockjaw" Davis, Art Farmer, Sonny Stitt, Anthony Braxton, and The Art Ensemble of Chicago.
Muhal Richard Abrams is affiliated with the following schools: