I always thought it was a metal theme...
I think the guitar needs some tuning/fooling around with. Anyway, this would actually be a good theme to start a metal medley of sonic themes. It's instant, semi-dramatic, and implies that it's going to be one hell of a fight :D
Well, I'm glad you uploaded this, because I actually didn't know where to start in the arrangement of the midi for this mix. I'll start with this theme :D
fantastic! and if needed or not ill go ahead and do sonic 1 and 2 bosses and S&K major boss. and possibly some final bosses