Now, my first aquaintance with this music was the Megadrive version, and there's not actually that much of either the MD or Amiga versions online - but there are some extracts from the Amiga version at:
(does a quick YT search)
http://www.youtube.com/watch?v=2Srt3n1OANw
http://www.youtube.com/watch?v=eEZ6lcfVFcc
http://www.youtube.com/watch?v=G60sxGre27E
Incredibly atmospheric graphics (for the time) and music, but very difficult to actually play - on the MD anyway...
Megadrive version:
http://www.youtube.com/watch?v=QocuSsovRJg
http://www.youtube.com/watch?v=eZ1ini877yI
http://www.youtube.com/watch?v=xSXx8n6hdqo
http://www.youtube.com/watch?v=dx7blnBBun0
http://www.youtube.com/watch?v=_4SDgou4Mwc