You know I always thought they could auto-correct pitches and lengthen sung notes, etc.
The funny thing is, I'm sure everything is pitch corrected, shifted, filled in, brightened, sustained, and just about anything else you can do, and it SUCKS!!!! If you're going to dub Minnie Driver, why not the rest of the cast?
I think it was when Rossum sings, "imagine me trying to hard to put you from my mind" and blatantly cracks on "my" that I turned off this wretched CD. alas, it only gets worse. I would have to say all of the leads lack the lung power required of the score.
Ummmm, I'm a classically trained vocalist, and let me tell you , none of these folks have ever sung opera. I doubt they could get through an entire musical either. With so many promising broadway actors who have both film and theater roles, you would think they could take the time to find actors who were a decent fit.

By the way, did Emmy Rossum's age bother anyone else? I mean come on, Raoul looked like he was thirty, the Phantom , 35 or older, and there's this like 16 year old girl. Last time I heard that was five to ten. Ewww....