Well, its obvious that the music combined with the atmospheres made an impact on everyone which is the aim of any game. There is a reason its been hailed as one of the best games ever made.
If anything, I think the music really evoked the sense of evil that entered these temples. Remember that they were supposed to be TEMPLES. Which I always interpreted as places of peace. Now that they are infected with these dark beings, they probably are a bit creepy.
Also, referring back to the temple idea, its almost like walking into a church, especially the older ones. While they are meant to be "houses of god" and such, I've always found something rather foreboding about them. Even though your voice echoes in the big empty space, you still almost feel claustrophobic. Ahh.. I'll get off the rant now...
