I love the soundtrack. (please note that because I also the game almost ardently I'm a bit a lot biased)

I think my favorite way of describing it is that it's dystopia in musical form. It's the type of music that doesn't scare so much as make you feel afraid, pair that up with the game itself and I wouldn't recommend playing in a dark room. _{I really wouldn't. I tried it, it was really really creepy}