On September 1943 VGIK returned to Moscow . Same year Migunov and his classmates joined Soyuzmultfilm and finished their first cartoon — '' Stolen Sun '' ( considered lost today ) . In 1945 Migunov and Sazonov worked as art directors on the first traditionally animated Soviet feature '' The Lost Letter '' by the Brumberg sisters . In 1946 they helped Mstislav Paschenko to restore '' The Song of Happiness '' short from scratch . It became the first Soyuzmultfilm work to receive an international award ( a bronze medal for the best animated film and a special award " For Humaneness " at the 8th Venice International Film Festival )
8th Venice International Film Festival
8th Venice International Film Festival
Yevgeniy Migunov