The episodic story of a composer of operettas, Rudi Kleiber, in in old Viennese days, and the two women in his life; Maria Zeitler, his sweetheart, later mistress, lost love, an operetta star, and his first patron, and the mother of a son he did not know he had; and of Greta, his first love and companion in later years
| Actor | Role |
|---|---|
 Dennis PriceRudi Kleiber | Rudi Kleiber |
 Gisèle PrévilleMaria Zeiter | Maria Zeiter |
 Patricia DaintonGrete | Grete |
 Anthony NichollsPrince Reinaldt | Prince Reinaldt |
 Grey BlakeFranzi | Franzi |
| MMuriel GeorgeHatti | Hatti |
| OOlive GilbertFrau Kurt | Frau Kurt |
| MMartin RossTenor | Tenor |
| GGerald CaseRudi's Secretary | Rudi's Secretary |
 Carl JaffeHeadwaiter | Headwaiter |
 Jeremy SpenserMaria's Son | Maria's Son |
 Martin BoddeyMinor Role (uncredited) | Minor Role (uncredited) |
 Moyra FraserMinor Role (uncredited) | Minor Role (uncredited) |
 Laurence HarveyMinor Role (uncredited) | Minor Role (uncredited) |
 Arthur LawrenceMinor Role (uncredited) | Minor Role (uncredited) |
 Jean LodgeMinor Role (uncredited) | Minor Role (uncredited) |