And that's the irony. Epic went with a number of excellent composers. Dan Froehlich (Xargon/Traffic Dept/Brix), Robert A Allen and Josh Jensen(?) (OMF, original Jazz and Epic Pinball) and of course Straylight Productions, who furnished Epic with both a MIDI soundtrack (Tyrian) and various MOD soundtracks (Unreal, UT, Jazz Jackrabbit 2 ...) (And to whoever mentioned Deus Ex: I presume you realise that Alexander Brandon did that one too? :)
Epic soundtracks are all winners to me, and consequently I am a big fan of not just the well-known composers -- Dan, Robert, Michiel and Alexander, but all the awesome contributions from the other artists, such as Skaven and Necros (and the others) in the UT soundtrack, and whoever it was who contributeed to the original Jazz Jackrabbit soundtrack (probably Josh Jensen).