I fixed this up some, and added some credits, but it still needs some work. Also, I removed Takahiro Fukada from the composers, as I see no evidence that he ever did anything but write and translate lyrics.
Some info taken from
Sonic Retro. There's a lot of work still needed for fixing up the credits on our sonic album pages.
I listened to some of this while working on the artist links. While the music from the early Sonic games is nice, the vocals from the later games (Sonic R, SA, SA2) are abysmal. My head still hurts from hearing that stuff.