New York - Viacom's (NYSE: VIA) MTV on Wednesday announced that Panic At The Disco and Dashboard Confessional will headline its "Rock Band Live" tour, a fall promotional tour for its "Rock Band" video game from Harmonix. The tour will also feature performances from "Rock Band" bands, who will compete for the chance to play on the main stage in between the headline acts' sets in each of the 28 cities on the tour schedule. MTV has secured Hot Topic and Pepsi Stuff as sponsors for the tour.