Did the actors sing for Rock of Ages?

Question

In Rock of Ages, did the actors themselves sing for the film, or did other people sing and they dub over the actors? Or was it a mix?

Answer 1

According to this New York Times review:

All the songs are sung, mostly without shame or distinction, by the actors themselves...

The director Adam Shankman wouldn't have cast Tom Cruise if he hadn't been able to sing:

"[Tom Cruise and I] made a gentlemen's agreement that if the vocal thing doesn't work out, we'll just shake hands and look for something else"

Tom Cruise ended up training for over 4 months. And he insisted that:

there be no digital enhancements of his voice either