Melodía interrumpida

Glenn Ford Dr. Thomas King

Eleanor Parker Marjorie Lawrence

Roger Moore Cyril Lawrence

Cecil Kellaway Bill Lawrence

Peter Leeds Dr. Ed Ryson

Evelyn Ellis Clara

Walter Baldwin Jim Owens

Ann Codee Mme. Gilly

Stuart Whitman

Leopold Sachse Leopold Sachse

Eileen Farrell Student at Mme. Gilly's / Voice of Marjorie Lawrence (voice)

Bess Flowers Party Guest (uncredited)

William Olvis Don José in 'Carmen'

Marcella Reale Musetta in 'La bohème'

Gilbert Russell Manrico in 'Il trovatore'

Rudolph Petrak Tenor

Gene Roth King Marke in 'Tristan und Isolde' (non-singing scene)

Tudor Williams King Marke in 'Tristan und Isolde' (singing scene)

Armando Tokatian Rodolfo in 'La bohème'

Edwin Dunning Marcello in 'La bohème'