Three Smart Girls
Starring Deanna Durbin, Barbara Read, Nan Grey, Charles Winninger, Binnie Barnes, Ray Milland, Nella Walker, Hobart Cavanaugh, John 'Dusty' King, Alice Brady
It's a comedy and music movie, and has a rating of 6.6 out of 10 from Imdb which is usually fine for this kind of movie.
Watch it here
Not found streaming from Brazil.