Words and Music
Starring Tom Drake, Mickey Rooney, Janet Leigh, Marshall Thompson, Betty Garrett, Jeanette Nolan, Ann Sothern, Perry Como, Cyd Charisse, Richard Quine
It's a documentary and comedy movie, and has a rating of 6.4 out of 10 from Imdb which is usually fine for this kind of movie.
Watch it here
Not found streaming from Germany.