A television broadcast launches a proclamation for amateurs: "If you know how to speak, you will know how to sing". The award mirage lured many person, with ambitions or financial problems, to enroll in the competition.
| Actor | Role |
|---|---|
 Alberto SordiAlberto Carboni | Alberto Carboni |
 Vittorio De SicaIl 'comandante' Gastaldi | Il 'comandante' Gastaldi |
 Mario RivaHimself | Himself |
 Ugo TognazziUgo | Ugo |
 Dorian GrayLuciana | Luciana |
 Achille ToglianiHimself | Himself |
 Dolores PalumboLa portinaia | La portinaia |
 Lorella De LucaMaria Luisa Gastaldi | Maria Luisa Gastaldi |
| YYvette MassonNot listed | Not listed |
 Andreina PagnaniNot listed | Not listed |
| Dolores PalumboNot listed | Not listed |
 Virgilio RientoNot listed | Not listed |
 Vira SilentiNot listed | Not listed |
| Achille ToglianiNot listed | Not listed |
| MMario AmbrosinoNot listed | Not listed |
 Gabriele AntoniniNot listed | Not listed |
| PPiera AricoNot listed | Not listed |
 Ciccio BarbiNot listed | Not listed |
| VVittorina BenvenutiNot listed | Not listed |
 Dario FoNot listed | Not listed |
 Enzo GarineiNot listed | Not listed |
 Giampiero LitteraNot listed | Not listed |