There is a very easy glitch in Guitar Hero 2, you can beat every song in the game! With a breeze, all you have to do is: pick your song of choice, then start playing it, but once you get to your very first star power tilt the guitar up, unleashing the star power. While the star power is lighting up your fretboard, only hit red notes that come at you but after the star power goes away, hit one yellow fret and one green fret. Then hurry up and pause the game, go to QUIT SONG, go to the main menu, and start a new game. Once the new game starts, every song will already be unlocked! Plus, every song will have 100% completion added to it.