Slightly related (from the same era). But the composer for the music for Unreal, Unreal tournament, Deus Ex, Tyrian, Jazz Jackrabbit and others has a music bundle for sale.
Keen 1 was 1990, deus ex was 2000. Says how far PC gaming went in those 10 years, eh? It understates it, even, since Keen was a great technical achievement, while Deus Ex had unremarkable graphics - the game sold on a great fusion of rpg and fps, not graphics.
Ah, thanks for this. I've had Jazz Jackrabbit 3's ImpulseTrackers for ages, but never knew/bothered to find out who the composer was. I had no idea he'd worked up an official album for it.
http://loudr.fm/bundle/alexander-brandon-bundle/hq4hZ