The fact that the man succumbed one morning to an irresistible urge to sit down at the piano and play the entire Chopin Sonata in B Minor would not have been so strange if it had not been for the fact that he had never played the piano in his life and he himself had no idea that he could.
| Actor | Role |
|---|---|
 Vlastimil BrodskýWalter Horton | Walter Horton |
| IInka ČekanováReporter | Reporter |
| KKarel HovorkaNot listed | Not listed |
 Rudolf HrušínskýFarley Gresham | Farley Gresham |
 Jiřina JiráskováMrs. Horton | Mrs. Horton |
 Jan KuželkaNot listed | Not listed |