If You Want - Believe It, If You Want - Don't

Roman Kurykin, an amateur jazzman and the owner of an absolute ear for music, cannot reconcile himself to the idea that his son Edik does not show any interest in music. The dejected father, in desperation, suspected that the child could have been replaced in the maternity hospital by mistake. He got the addresses of two families where the sons were born at the same time as the younger Kurykin. Kurykin reports his suspicions to two other fathers, Shulgin and Sazonov. In secret from their wives, husbands begin their investigation.

Directed by Slava Chaplin, Igor Usov, If You Want - Believe It, If You Want - Don't leans on a strong ensemble — Zinoviy Gerdt, Grenada Mnatsakanova, Vladimir Klimentyev — to carry a story that balances spectacle with character.

The film landed with audiences for its craft and performances, and remains one of the most talked-about comedy titles of 1964.