I really like the Civ3 music. Having said that, I actually keep it off. I find I do better for some reason with it off. I decided to turn it back on recently and I lost every game I played. Then I turned it off and started winning again. Weird, eh? Maybe because I get into the music enough that I stop putting all my concentration into the game, I dunno. I sometimes listen to the music outside of the game instead, though.