Robert Alda

George Gershwin

Joan Leslie

Julie Adams

Alexis Smith

Christine Gilbert

Charles Coburn

Max Dreyfus

Julie Bishop

Lee Gershwin

Albert Bassermann

Prof. Franck

Morris Carnovsky

Morris Gershwin

Rosemary DeCamp

Rose Gershwin

Oscar Levant

Oscar Levant

Paul Whiteman

Paul Whiteman

Al Jolson

Al Jolson

Hazel Scott

Hazel Scott

Herbert Rudley

Ira Gershwin

Darryl Hickman

Ira Gershwin as a Boy

Charles Halton

Mr. Kast

Andrew Tombes

Mr. Million

Walter Soderling

Mr. Muscatel

Eddie Marr

Buddy De Sylva

Theodore von Eltz

Foley

Bill Kennedy

Herbert Stone

Johnny Downs

Dancer

Will Wright

Rachmaninoff

Lynn Baggett

Guest (uncredited)

Gower Champion

Tap Dancer at Remick's (uncredited)

Elsa Maxwell

Elsa Maxwell (uncredited)

Mark Stevens

Steve (uncredited)

Charles Waldron

Doctor (uncredited)