Miley Cyrus: America's teen sweetheart, or God's gift to vice-squad sting operations? The Hannah Montana gal goes for a grown-up club sound, with Rihanna-style robot-disco thump and boy-crazy AutoTune vocals about how hot she is. She boasts, "I always get a 10, 'cause I'm built like that." If she gets a 10, what does he get — 15 to 20? It's no "Party in the USA" or "See You Again," but the chorus packs plenty of electro-fizz pizzazz.