Love Me Tonight
Starring Maurice Chevalier, Jeanette MacDonald, Charles Ruggles, Charles Butterworth, Myrna Loy, C. Aubrey Smith, Elizabeth Patterson, Ethel Griffies, Blanche Friderici, Joseph Cawthorn
It's a comedy and music movie, and has a rating of 7.6 out of 10 from Imdb which is usually fine for this kind of movie.
Watch it here
Not found streaming from Germany.