Opernring (1936)

"Opernring" is a 1936 Drama movie directed by Carmine Gallone and starring by Jan Kiepura, Friedl Czepa. An ordinary Viennese taxi driver, Toni Kowalski, wanders into a diner, where a singing competition is taking place, and decides to take part in it. He is recognized as a maverick, the owner of an amazing voice, and is awarded the victory in the competition. Toni is patronized by an influential socialite.