Ray Anderson is an American jazz trombonist. Trained by the Chicago Symphony trombonists, he is regarded as someone who pushes the limits of the instrument, including performing on alto trombone and slide trumpet. He is a colleague of trombonist George E. Lewis. Anderson also plays sousaphone and sings. He was frequently chosen in DownBeat magazine's Critics Poll as best trombonist throughout the late 1980s and early 1990s.

George Emanuel Lewis is an American composer, performer, and scholar of experimental music. He has been a member of the Association for the Advancement of Creative Musicians (AACM) since 1971, when he joined the organization at the age of 19. He is renowned for his work as an improvising trombonist and considered a pioneer of computer music, which he began pursuing in the late 1970s; in the 1980s he created Voyager, an improvising software he has used in interactive performances. Lewis's many honors include a MacArthur Fellowship and a Guggenheim Fellowship, and his book A Power Stronger Than Itself: The AACM and American Experimental Music received the American Book Award. Lewis is the Edwin H. Case Professor of American Music, Composition & Historical Musicology at Columbia University.