Opera Ball
Opernball (original)
Starring Hans Moser, Paul Hörbiger, Theo Lingen, Marte Harell, Will Dohm, Heli Finkenzeller, Theodor Danegger, Erika von Thellmann, Hermann Brix, Vera Complojer
It's a comedy and romance movie, and has a rating of 6.7 out of 10 from Imdb which is usually fine for this kind of movie.
Watch it here
Not found streaming from Sweden.