Bird at St. Nick's was a live tape recording by Charlie Parker taken from a February 1950 performance at St. Nicholas Arena. The recording was made on non-professional equipment by Jimmy Knepper, a young trombonist who became an integral member of Charles Mingusâ ensemble. As with his recording released as Bird on 52nd St., Knepper focused mainly on recording Parker's solos to conserve audiotape. The album was the first release on Charles Mingus' Jazz Workshop label.