Eccentrics, the Sunny Side of the Street(2016)

Original title: Excentrycy czyli po słonecznej stronie ulicy

In late 1950s Poland, jazzman Fabian returns from England and forms a swing big band that quickly rises to fame. Their glamorous new singer, the enigmatic Modesta, becomes both the group’s star and Fabian’s love interest. As their success begins to resemble a Hollywood musical, the authorities take a growing interest in their world of music and romance.