no offence but 2 is better, it has better songs, and also i found that the pro songs were easier then the amatuer songs, also if u do make a 4th which would be nice, try givin the different guitars different abilities, like with the broom it could make the music come faster or more difficult songs in general, or with the 3 guitar, three notes on screen at any one time, ya know what i mean???
 "Death Squad"){kind=icon}
 "Dillo Hills"){kind=icon}
 "Mr Runner"){kind=icon}
 "Snipedown"){kind=icon}
 "UPGRADE COMPLETE!"){kind=icon}
 "GeoSketch"){kind=icon}
 "Morningstar"){kind=icon}
 "Bowja 3 - Ninja Kami"){kind=icon}
 "Rot kabouter"){kind=icon}
 "Mushroom Revolution"){kind=icon}
 "The Several Journeys of Reemus: Chapter 2"){kind=icon}
 "Balloon Invasion"){kind=icon}
 "The Generic TD"){kind=icon}
 "create your own tower defense"){kind=icon}
 "Z-Rox"){kind=icon}
 "Super Crazy Guitar Maniac Deluxe 3"){kind=icon}
 "The Torture Game 2"){kind=icon}