
"From the guy that brought you the first music album on a NES cartridge, Alex Mauer's "9999" features 42 songs using 9 different game system's soundchips. The list includes: NES, Commodore 64, Gameboy, Atari XL computer, MSX computer, IBM PC/DOS, Commodore Amiga, Game Gear, and Sega Genesis. CD available for purchase starting June 1st 2008 at
http://headlessbarbie.com ; Released on the II (pause) label. *: The first music album on NES cartridge is titled "Vegavox" and has been covered by many blogs and magazines."
I actually put up a couple of posts on Vegavox
here.