Vvardenfell and Morrowind are one of the ugliest, most unforgiving places i've ever played in an rpg and Jeremy Soule gave them life and context with his music.
They were bleak, ugly and alien places but it all worked perfectly with Soule's music. Like Bridge said, to simplify his music to that extent is doing a disservice to the music and the game.
Not very lush and green, wouldn't you say?
I wish I had gameplay uploaded of Morrowind so I could show how the music and environments work so well together but ah well.