This is a movie that allows you to dream of being a rock star. To me, that was a mix of a musical genre like Grease (singers in separate places singing at the same time, and boy meets girl, or girl meets boy, whichever way you want to look at it).
Tom Cruise played a good role in Stacee Jaxx, but I think I would have loved to see John Travolta there as this would have reminded me even more of Grease. This said, this is a rock and roll movie, not Grease.