Robert Alda

Character: George Gershwin

Joan Leslie

Character: Julie Adams

Alexis Smith

Character: Christine Gilbert

Charles Coburn

Character: Max Dreyfus

Julie Bishop

Character: Lee Gershwin

Albert Bassermann

Character: Prof. Franck

Morris Carnovsky

Character: Morris Gershwin

Rosemary DeCamp

Character: Rose Gershwin

Oscar Levant

Character: Oscar Levant

Paul Whiteman

Character: Paul Whiteman

Al Jolson

Character: Al Jolson

George White

Character: George White

Hazel Scott

Character: Hazel Scott

Anne Brown

Character: Bess

Herbert Rudley

Character: Ira Gershwin

John B. Hughes

Character: Hughes

Mickey Roth

Character: George Gershwin as a Boy

Darryl Hickman

Character: Ira Gershwin as a Boy

Charles Halton

Character: Mr. Kast

Andrew Tombes

Character: Mr. Million

Gregory Golubeff

Character: Mr. Katzman

Walter Soderling

Character: Mr. Muscatel

Eddie Marr

Character: Buddy De Sylva

Theodore von Eltz

Character: Foley

Bill Kennedy

Character: Herbert Stone

Oscar Loraine

Character: Maurice Ravel

Johnny Downs

Character: Dancer

Ernest Golm

Character: Otto Kahn

Martin Noble

Character: Jascha Heifetz

Hugo Kirchhoffer

Character: Walter Damrosch

Will Wright

Character: Rachmaninoff

Lynn Baggett

Character: Guest (uncredited)

Gower Champion

Character: Tap Dancer at Remick's (uncredited)

Elsa Maxwell

Character: Elsa Maxwell (uncredited)

Mark Stevens

Character: Steve (uncredited)

Charles Waldron

Character: Doctor (uncredited)

Bernard DeRoux

Character: Porter (uncredited)

Joe Gilbert

Character: Nightclub Patron (uncredited)