"Johann Strauss Jr. is forced by his father to forget music and to work in a bakery, where he falls in love with Resi, the baker's daughter. The girl gets jealous when a contessa asks Strauss Jr. to write a waltz for her."
Edmund Gwenn
as Johann Strauss, the Elder
Esmond Knight
as Johann Strauss, the Younger
Jessie Matthews
as Resi Ebezeder
Fay Compton
as Countess Helga von Stahl
Frank Vosper
as Prince Gustav
Robert Hale
as Ebezeder
Charles Heslop
as Valet
Hindle Edgar
as Leopold
Marcus Barron
as Anton Drexler
Betty Huntley-Wright
as Lady's Maid
Bertram Dench
as Engine Driver (uncredited)
Sybil Grove
as Mme. Fouchett (uncredited)
B.M. Lewis
as Domeyer (uncredited)
Bill Shine
as Carl (uncredited)
John Singer
as Boy (uncredited)
Cyril Smith
as Secretary (uncredited)
Alfred Hitchcock
Director
Claude Allain
Writer
Heinz Reichert
Guy Bolton
André Dugès
A. M. Willner
Glen MacWilliams
Camera Operator
Ernst Marischka
Charles Frend
Editor
Alma Reville