pepodmc, there's probably not much I can do to help, but I remember that someone here at Sega-16 did a lot of work with Genesis music. Can't remember who it is, but you can try posting something in "Blast Processing" and see if anyone can help.
If you read this thread, I believe the guy that knows about Genesis sound and music posts some stuff about it...
http://www.sega-16.com/forum/showthr...-2-(Proto)-Bug