Saxophonist Henry Threadgill, bassist Fred Hopkins and drummer Steve McCall originally came together in 1971 as a group designed to play the music of Scott Joplin for a Chicago theatrical production. Air continued as a unit until McCall left the group in 1983. This session from 1977 catches the band at the midpoint of its existence. 3 compositions by Threadgill and one each by Hopkins and McCall.