Classic musicals supply lots of fun for theater fans; you can sing along, root for the star and laugh at the bad guys that are always outsmarted. The one sticking point with a beloved musical is that the singing must live up to or surpass the original. Otherwise, what's the point? You can just stay home and listen to the soundtrack. Well, the performers in Porchlight's Dreamgirls make sure that their show outdoes any recording of the high energy play.