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Patrice Munsel
Nellie Melba

Robert Morley
Oscar Hammerstein I

John McCallum
Charles Armstrong

John Justin
Eric Walton

Alec Clunes
Cesar Carlton

Martita Hunt
Mme. Marchesi

Sybil Thorndike
Queen Victoria

Joseph Tomelty
Thomas Mitchell

Beatrice Varley
Aunt Catherine

Violetta Elvin
Prima Ballerina

Cecile Chevreau
Annette

Theodore Bikel
Paul Brotha

Charles Craig
Man (uncredited)

Marcel Poncin
Roger (uncredited)

Robert Rietti
Italian Policeman (uncredited)

Bill Shine
Man (uncredited)