Golf Classic

Golf Classic uses Super Game Boy sound effects and has a very good soundtrack... there isn't much more.

Unused Super Game Boy Sounds
The game has a SOUND table fully programmed for both A and B type sounds along with the recommended pitch/volume settings, as with the Tetris 2 (Game Boy) sound test. The game does not use B type sounds.

Game Genie code ID  will replace the menu selection sound with any of the unused sounds.

There is also a routine that loads the unused mute command, and a separate routine that sets the unused SOUND bytes. Game Genie code will set the unused bytes to any value.

Development Related Text
Located at is some interesting Super Game Boy-related notes, or is this source code for the Super Game Boy bios itself? Were more features planned?

lies more source code.