Donkey Konga 2 Cheat Codes for Gamecube

Hidden Song
Go to Challenge Mode and choose any of the song length choices. On the final song you get to play the song Na Na Hey Hey Kiss Him Goodbye. This is the only Mode you can play this song in.

Unlock Donkey Konga 1 Soundsets
Save on the same memory card that has your Donkey Konga 1 Files