Jan Kiepura

Riccardo Gatti

Aileen Marson

Mary Newberg

Emlyn Williams

Theodore Bruckner

Sonnie Hale

Gatti's secretary

Reginald Smith

Baron Felix Kleeberg

Gina Malo

Kleeberg's Brunet

George Merritt

Otto Newberg

Muriel George

Mrs. Newberg

D.J. Williams

Opera House Secretary

Bruce Winston

Maurice Elvey