At the amateur talent show the boy, accompanying himself on the accordion, sings a song about Moscow... The plot of the movie is based on the story of the director of the school about how this accordion, once belonging to a cadre worker who died during a demonstration in 1905, has been in many hands before it got to the guys.
| Actor | Role |
|---|---|
 Sergei FilippovBrykin, the accordionist | Brykin, the accordionist |
 Pavel KadochnikovKonstantin Nikolaevich Zlatogorov (uncredited) | Konstantin Nikolaevich Zlatogorov (uncredited) |
| NNikolai LeonovKolya Leonov | Kolya Leonov |
 Ivan LyubeznovSchool Director | School Director |
 Boris TeninPlaywright | Playwright |
 Georgiy VitsinRailwayman (uncredited) | Railwayman (uncredited) |
 Nina StravinskayaTanya Nikanorova | Tanya Nikanorova |
| OOleg BobrovOleg | Oleg |
 Viktor SeleznyovFedya | Fedya |
| BBoris BodrovBoris | Boris |
| SSergey IldSergey | Sergey |
 Leonid PirogovGrandfather Nikanor Ivanovich Nikanorov | Grandfather Nikanor Ivanovich Nikanorov |
 Aleksandr ShirshovSchool Assistant Director | School Assistant Director |
 Stepan KayukovRepresentative of the factory (uncredited) | Representative of the factory (uncredited) |
 Margarita LifanovaCompere (uncredited) | Compere (uncredited) |
 Pavel ShpringfeldPassenger of the train (uncredited) | Passenger of the train (uncredited) |
 Konstantin SorokinPub frequenter (uncredited) | Pub frequenter (uncredited) |