Do all of the members of the cast of phantom of the opera, the movie, sing their

Question:

Do all of the members of the cast of phantom of the opera, the movie, sing their parts, if some don't which?

Best Answer - Chosen by Asker: Everyone except Minnie Driver (Carlotta Giudicelli, character name) her vocals were dubbed by Margaret Preece, a professional opera singer. I think that's right