I'm looking at the musicals list and noticed you didn't include Sound of Music. It's like one of the bibles for us who are in the music field. I haven't seen the other movies you wrote there so I cannot suggest which to bump, should you decide to add SoM. I'll probably pick Dreamgirls (I saw it and didn't like it much).

Oh another music/bio related is the movie Amadeus. It's not really a musicale in the sense that they don't sing the dialogues but the movie was very much dependent on the use of Mozart's music while telling his life.