As in Sweeney Todd--the Demon Barber of Fleet Street.
I must confess that I don't know much about this except that it is based on a Stephen Sondheim musical and that it has been performed onstage a lot. I think I saw bits and pieces of it on PBS years ago and it featured Angela Lansbury.
So Johnny Depp, Helena Bonham Carter and perhaps others will be singing. Sacha Baron Cohen (Borat) is in it as well.
I'm up for it! How about you?