Andre Gregory as Dimitri Weismann

Stephen Sondheim as Self- Composer

Arthur Rubin as Roscoe

Barbara Cook as Sally Durant Plummer

George Hearn as Benjamin Stone

Herbert Ross as Self- Concert Director

Jim Walton as Young Buddy

Paul Gemignani as Self- Conductor

Howard McGillin as Young Ben

Mandy Patinkin as Buddy Plummer

Lee Remick as Phyllis Rogers Stone

Liz Callaway as Young Sally

Daisy Prince as Young Phyllis

Betty Comden as Emily Whitman

Adolph Green as Theodore Whitman

Liliane Montevecchi as Solange Lafitte

Elaine Stritch as Hattie Walker

Phyllis Newman as Stella Deems

Carol Burnett as Carlotta Campion

Licia Albanese as Heidi Schiller

Erie Mills as Young Heidi

Ronn Carroll as Chorus

Susan Cella as Chorus

Robert Henderson as Chorus

Frank Kopyc as Chorus

Marti Morris as Chorus

Ted Sperling as Chorus

Susan Terry as Chorus

Sandra Wheeler as Chorus

Karen Fraction as Dancer

Jamie M. Pisano as Dancer

Elvera Sciarra as Dancer

Roy Scheider as Narrator

Thomas Z. Shepard as Self - Interviewee