Amnesia Trailer : Grunt attack music?

[Asablief]

I revisited the Amnesia teaser trailer after playing the game through, and I realized that the Grunt attack music in the trailer was different from the one featured in the actual game. It seemed to have a faster, more dangerous beat then the one in-game. I liked it, it made me feel uneasy just listening to it, giving it a real sense of terror. The one in the actual game, while the difference appears to be very minimal / subtle, it just doesn't have that same sense of horror. Is there any way I could get the raw music that was used in the trailer?