Billy Elliot: The Musical is, of course, the one about the 11-year-old boy who wants to study dance in a small village in northeastern England where guys are expected to learn boxing. Its Phoenix Theatre production had plenty going for it: Maria Amorocho's showstopping take on "Grandma's Song"; Ross Nemeth's joyful performance as Michael; and Sam Hay's skillful choreography, which made even non-dancers appear poised. But it was Matthew Dean's magnificent Billy that one remembers. His en pointe was polished, his singing superb, and "Angry Dance," in which he exploded into a ball of fury (because no one in County Durham is as angry as a kid who wants to demi-plie but can't), was worth, as the saying goes, the price of admission.