 The Xbox 360 version adds an additional 24 downloadable songs via Xbox Live Marketplace, bringing the total to 98 songs.There are 40 songs in the main Career mode for the PlayStation 2 version, and 48 songs in the Xbox 360 version.Songs are organized by tiers that are related to the song's difficulty, and there are differences between the PlayStation 2 and Xbox 360 ordering due to the extra songs.