A Burton/Depp Sweeney Todd?

There is a rumor that Tim Burton and Johnny Depp are going to do an adaptation of Stephen Sondheim's dark musical, Sweeney Todd. Don't know how reliable the rumor is. It's also harder to get enthusiastic about it after the disappointment I felt at Charlie and the Chocolate Factory. But Sweeney Todd is one of the great musicals of all time, and it seems like prime material for Burton & Depp (although so did Charlie.)

Then again, I didn't much care for Sleepy Hollow when I saw it in the theater, and I've come to love it on DVD. Maybe the same will happen with Charlie.

Can Johnny Depp sing? I think I've heard he was in a band, but that doesn't prove anything.