Full Cast
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Boris Livanov
Pyotr Vinogradov, inventor
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Valentin Tsishevskiy
Senya Kaufman
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Konstantin Gradopolov
Kotya Okhotnikov
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Galina Pashkova
Valya, music student
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Nadezhda Ardi
Tonya, architecture student
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Ivan Pereverzev
Physical education instructor (uncredited)
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Tatyana Barysheva
Senya's mother (uncredited)
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Vsevolod Sanayev
Red army sailor (uncredited)
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Galina Stepanova
Young girl (uncredited)
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Sergei Antimonov
Professor (uncredited)
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Yeva Milyutina
Spectator at the concert (uncredited)
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Maria Klyuchareva
Middle aged woman (uncredited)
