Did You Know Gaming? Forums

Don't know if this was submitted yet, but in four sword adventures/ super paper mario there exists some rather interesting unused songs. In four swords it's the mario theme from Super Mario World's special zone oddly in a completely different format than the rest of the songs in the game.
http://tcrf.net/The_Legend_of_Zelda:_Fou...used_Music
In super paper mario it is a poorly rendered version of smb3's main theme.
http://tcrf.net/Super_Paper_Mario#Unused_Music