 A sequel , Guitar Hero On Tour : <unk> , was released in November 2008 , featuring music spanning four decades . A third title in the series , Guitar Hero On Tour : Modern Hits , was announced following various rumors of its existence , and was released in June 2009 , featuring songs recorded since the year 2000 . Both games use the " Guitar Grip " controller , and allow two players to compete against each other using any version of the On Tour series , with songs being shared between versions . 
