I didn't know this until very recently, but it was apparently revealed a few years ago by someone within Sega during the 90's that Michael Jackson had originally done some work on the soundtrack of the classic Genesis game, Sonic 3. Tonight, I discovered a small documentary comparing and contrasting some of Jackson's music (recorded approximately around the time of Sonic 3's development) with some of the songs from Sonic 3. So this is pretty much true, judging by how similar the songs are. It's said that collaboration between Sega and Jackson ended upon him being accused of allegedly molesting children.
But this is a pretty interesting video for those interested in gaming history: