Aero the Acrobat, Zero the Squirrel, Blaster Master 2, Batman Revenge of the Joker etc etc were all done in the US or UK as far as I know and did not use Sunsoft's renowned Japanese team. These games all sounds rally bad. All games that came before them sound really good. Batman for the PCE has great music, it's like the NES' music (same tunes) only better.