In this musical, a tempermental opera singer falls in love with a hearing-impaired young woman.
| Actor | Role |
|---|---|
 Mario LanzaTonio Costa | Tonio Costa |
 Johanna von KoczianChrista | Christa |
 Zsa Zsa GaborGloria de Vadnuz | Gloria de Vadnuz |
 Kurt KasznarLadislas Tabory | Ladislas Tabory |
 Hans SöhnkerProf. Bruckner | Prof. Bruckner |
 Annie RosarMathilde | Mathilde |
 Peter CapellIntendant Huebner | Intendant Huebner |
 Walter RillaDr. Bessart | Dr. Bessart |
 Nicoblonde girl | blonde girl |