Colm Feore as Glenn Gould

Derek Keurvorst as Gould's Father

Derek Keurvorst as Gould's Mother

Katya Ladan as Young Glenn Age 3

Joshua Greenblatt as Young Glenn Age 8

Sean Ryan as Young Glenn Age 12

Kate Hennig as Chambermaid

Sean Doyle as Porter

Sharon Bernbaum as Female Guide

Don McKellar as Concert Promoter

David Hughes as Stagehand

Carlo Rota as C.B.S. Producer

Peter Millard as C.B.S. Engineer

John Dolan as C.B.S. Assistant Engineer

Allegra Fulton as Waitress

Dick Callahan as Trucker #1

Guy Thauvette as Trucker #2

R.D. Reid as Trucker #3

Conrad Bergschneider as Trucker #4

Gerry Quigley as Music Critic

Gale Garnett as Journalist

David Young as Writer

James Kidnie as Photographer

Maia Filar as Girl

Marina Anderson as Mother

Marie-Josée Gauthier as Professor

Nick McKinney as Interpreter

Moynan King as Questioning Woman

Knowlton Nash as V.O. Announcer (voice)

Michael Kopsa as Broker #1

Len Doncheff as Broker #2

Ian D. Clark as Phillip Brennan

David Clement as Desmond

Jimmy Loftus as Waiter #1

Frank Canino as Waiter #2

Bruno Monsaingeon as Self - Violin I: Opus #1

Yehudi Menuhin as Self

Margaret Pacsu as Self

Jessie Greig as Self

Megan Smith-Harris as Self