Glenn Gould as Himself (Archive Footage)

Kevin Bazzana as Self (Biographer)

Vladimir Ashkenazy as Self

Fred Sherry as Self (Cellist)

John P.L. Roberts as Self (Friend of Gould's)

Victor Feldbrill as Self (Conductor)

Fran Barrault as Self (Gould's girlfriend)

Gordon Burwash as Self (archival footage)

Cornelia Foss as Self

Leonard Bernstein as Self (archival footage)

Mark Kingwell as Self (Philosopher/Writer)

Humphrey Burton as Self (archival footage)

Petula Clark as Self