Most of the actors from the original stage production reprised their roles for the film: Warren Finnerty as Leach, Carl Lee as Cowboy, Garry Goodrow as Ernie, Jerome Raphel as Solly, Barbara Winchester as Sister Salvation, and Henry Proach as Harry. All the musicians from the original stage production appeared: Freddie Redd (composer, piano), Jackie McLean (alto sax), Michael Mattos (bass), and Larry Ritchie (drums). Non-original cast members James Anderson and William Redfield took the roles of Sam and Jim Dunn. The character of Jaybird was cut from the film, that role essentially shifted to a largely off-screen camera operator, J.J. Burden, voiced by Roscoe Lee Browne. The music played on the onscreen record player is "Marmaduke" by and performed by Charlie Parker (take 4).