They Shall Have Music
Starring Jascha Heifetz, Joel McCrea, Gene Reynolds, Walter Brennan, Terry Kilburn, Tommy Kelly, Porter Hall, Walter Tetley, Gale Sherwood, Alfred Newman
It's a drama and family movie, and has a rating of 6.9 out of 10 from Imdb which is usually fine for this kind of movie.
Watch it here
Not found streaming from Switzerland.