As such, it was the first WoW expansion score that I listened to outside of the game. To my ears, it was substantially darker than previous efforts, although there contained moments of beauty and excitement. Due to the nature of the expansion, the soundtrack is all over the place thematically, occasionally rewriting old zone music (alas).
The one thing that really pops out at me from this album is how the composers extensively used various background sound effects and noises to suppliment the tunes. I'm not sure if these were added for the album or if these exist in-game, but they certainly add more in terms of atmosphere. Interestingly enough, one of my all-time favorite World of Warcraft tracks came from this expansion, so it certainly wasn't a wasted effort.