Donkey Kong Country Cheats for Wii
Unlock Bad Buddy Code:
To enable free switching between 2 players go to the 'Game select' screen and highlight 'Erase Data' and press B, A, Down, B, Up, Down, Down, Y, A.
Start with 50 Lives:
At the 'File Select' Screen select 'Erase Game' which will flash and then press B, A, R, R, A, L and choose a game.
Practice the Bonus Rounds:
Press Down, Y, Down, Down, Y when the Intro is playing.
Unlock Music Test:
Highlight 'Erase game' and press Down, A, R, B, Y, Down, A, Y and then press Select.
This cheat applies to "Donkey Kong Country" for GBA and SNES. I have not tried it on my Wii yet. In the file selection screen higlight "erase a game" but don't press anything other than the following. Press B,A,R,R,A,L, and then choose a game file to play in. When you start you will have 50 lives. (or 50 lives more than the amount you had. I'm not sure.)