Schani, Johan Strauss Jr., is forced by his father to forget music and to work in a bakery. Here he falls in love with Resi. The girl gets very jealous when a rich and beautiful contessa asks Schani to write a waltz for her. Schani writes and plays it, but he is always loyal to his girlfriend.
Biography | Music | Romance
| Esmond Knight | … | Johann Strauss, the Younger | |
| Jessie Matthews | … | Rasi | |
| Edmund Gwenn | … | Johann Strauss, the Elder | |
| Fay Compton | … | Countess Helga von Stahl | |
| Frank Vosper | … | Prince Gustav | |
| Robert Hale | … | Ebezeder | |
| Marcus Barron | … | Drexter | |
| Charles Heslop | … | Valet | |
| Betty Huntley-Wright | … | Lady’s Maid | |
| Hindle Edgar | … | Leopold (as Hindle Marriott Edgar) | |
| Sybil Grove | … | Mme. Fouchett | |
| Billy Shine Jr. | … | Carl (as Bill Shine) | |
| Bertram Dench | … | Engine driver | |
| B.M. Lewis | … | Domeyer | |
| Cyril Smith | … | Secretary |