Like many others who commented, I prefer the songs from scgmd2...the song selection for scgmd3 isn't quite as good and each song took a little too long.
I enjoy the addition of the 4th button, though...and the way you can make your keyboard into a ''guitar''
I suggest people who are going to play this for the first time play scgmd2 first. I think the reason why I appreciate this game is because I enjoyed the previous one. It's one of those games you'd get used to eventually
 "Red Remover"){kind=icon}
 "Super Crazy Guitar Maniac Deluxe 2"){kind=icon}
 "Super Crazy Guitar Maniac Deluxe 3"){kind=icon}