The Lost Letter (1945), a Soviet, Russian-language cartoon filmed in Moscow.
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All the songs in the movie were contributed by Ivan Mykolaychuk, who also helped Ivan Drach write the movie's script.
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As Vasyl arrived with his friend near their village, Dykanka, they met a little boy who asked them to let him go to see the cossack, Vasyl who had supposedly returned from having seen the empress.