Jack Webb
Role: Pete Kelly
Janet Leigh
Role: Ivy Conrad
Edmond O'Brien
Role: Fran McCarg
Peggy Lee
Role: Rose Hopkins
Andy Devine
Role: George Tenell
Lee Marvin
Role: Al Gannaway
Ella Fitzgerald
Role: Maggie Jackson
Martin Milner
Role: Joey Firestone
Than Wyenn
Role: Rudy Shulak
Herbert Ellis
Role: Bedido
John Dennis
Role: Guy Bettenhouser
Jayne Mansfield
Role: Cigarette Girl
Mort Marshall
Role: Cootie Jacobs
Moe Schneider
Role: Trombonist (Big 7)
George Van Eps
Role: Guitarist (Big 7)
Ray Sherman
Role: Pianist (Big 7)
Dick Cathcart
Role: Trumpet Player / Webb's Cornet Double
Matty Matlock
Role: Clarinetist (Big 7)
Eddie Miller
Role: Saxophonist (Big 7)
Nick Fatool
Role: Drummer (Big 7)
Jud De Naut
Role: Bassist (Big 7)
Nesdon Booth
Role: Squat Henchman (uncredited)
Perry Botkin Sr.
Role: Tuxedo Band Member (uncredited)
Teddy Buckner
Role: Cornet Soloist (uncredited)
Harper Goff
Role: Tuxedo Band Banjo Player (uncredited)
Jester Hairston
Role: Mourner (uncredited)
Donald Kerr
Role: Drunk in Speakeasy (uncredited)
Hank Mann
Role: Argumentative Husband in Speakeasy (uncredited)
Harry 'Snub' Pollard
Role: Waiter (uncredited)
Joe Venuti
Role: Tuxedo Band Member (uncredited)