But for one completely inappropriate part, the rest is true to the Broadway musical, though the talent isn't as good. And, why do we need an additional song not in the musical? Did David keep tinkering with the Sistine Chapel? He certainly didn't turn it over to some local painter!
I'm not at all an Anne Hathaway fan, but to sing and act and nail it in one take, which had to be one take, kudos to her.
Also, someone needs to tell Russell Crowe he can't sing- apparently the producers and director didn't have the guts to.