Those Not Allowed to Love (1951)

Pavlos, a conservatory student dreaming of becoming a great artist of quality music, lives with his fiancée Kaiti in a small room, hosted by two friends. Due to financial tribulations, he is forced to join his friends' folk band and performs every night at a night club. That's were Mr Giorgos and his lover Liza frequent. Liza, a rich girl, falls in love with Pavlos and tries to seduce him. However, when she realizes how deeply he loves his fiancée, decides to help him get back together with Kaiti.