A presenter invents a radio quiz in which the contestants have to recognize a popular tune disguised as a classical one. Lots of people take part in the contest.
| Actor | Role |
|---|---|
 Lelio LuttazziLelio | Lelio |
 Lyla Roccofidanzata di Lelio | fidanzata di Lelio |
 Mike BongiornoMike | Mike |
 Alba Arnovafidanzata di Mike | fidanzata di Mike |
 Peppino De FilippoCuciniello | Cuciniello |
 Checco DuranteNot listed | Not listed |
 Deddi SavagnoneNot listed | Not listed |
 Sandra MondainiNot listed | Not listed |
| GGiulio CalìNot listed | Not listed |
 Memmo CarotenutoNot listed | Not listed |
 Silvio BagoliniNot listed | Not listed |
| DDiana DeiNot listed | Not listed |
| CCristina FantoniNot listed | Not listed |
| PPaolo BacilieriNot listed | Not listed |
 Nora RicciNot listed | Not listed |
| MMario SilettiNot listed | Not listed |
 Emilio PericoliNot listed | Not listed |
 Barbara ShelleyNot listed | Not listed |