Truly very creepy! The voice gave some real credibility to the opening strings. After the opening section broke, though, the piece holds its own extremely well! I love the march of the stacc. low string section. The return of the voice really brings you to a place of security. I would try to smooth out a couple of the more jarring movements and the introductions of the choir, though. The piano line and ambient noises following are really nice. The very end, however, was a bit too happy for me :P I would've like to have it end in uncertainty.
Overall, really nice job! Be proud of this one :)