i got perfect in every song in SCGMD2 and 3. it's really easy. if you want a challenge play thirdstyle. http://thirdstyle.com/play my account name is klimtkiller :)
this game is sooo hard! there should be badges. Maybe an impossible badge for beating it without loosing a single life. that would be an extra hard one
 "Super Crazy Guitar Maniac Deluxe 2"){kind=icon}
 "Bloons"){kind=icon}
 "Bloons Tower Defense 4"){kind=icon}
 "Frantic"){kind=icon}
 "Music Catch"){kind=icon}
 "Meat Boy (map pack)"){kind=icon}
 "SHIFT 3"){kind=icon}
 "Heavy Weapons"){kind=icon}
 "Continuity"){kind=icon}
 "99 Bricks"){kind=icon}
 "Feel the Beat (F2Jam)"){kind=icon}
 "MoneySeize"){kind=icon}
 "Avoidster"){kind=icon}