It was said of Gary Cooper that you could never catch him acting on set, that only on film did his performances spring to life. Billy Elliot is a show in a similar vein. On record, it isn’t a particularly special score. Between disappointingly conventional melodies and frequently clumsy lyrics, the songs depend entirely on powerful staging and choreography to bring them to life. The result is a show that is a good bit of fun to watch, but not much fun to listen to, with one exception; “Grandma’s Song” is the number I keep returning to even after all the other songs have worn out their charm.