Early revisions of Sonic Heroes songs popped up onto the internet before the game was released, this page is deticated to these.

sonicheroesearly,mp3 - This was an early version of the Theme to Sonic Heroes, including the band forgetting half of the lyrics, and merely "Ba da-ba ba ba"-ing instead.

what-im-made-of.mp3 - This prototype version of the final fight theme song is a 1:07 version of the main song with the basic lyrics being played. Some of the instruments seem to be missing in the background as well.