In Vienna, aspiring composer Johann Strauss Jr. clashes with his domineering father, who wants him to abandon music for a steady job in a bakery. Torn between his love for the baker’s daughter, Resi, and the encouragement of a wealthy countess, Strauss finds inspiration that leads to the creation of "The Blue Danube."

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