Thanks a lot for your comments! I'm glad you enjoyed it, you guys really "got" the game! Even though nothing seems particularly scary by itself, the atmosphere, the music, the art, even the game mechanics and several subtle tricks all come together to create a sense of dread and fear.
As for the music, I think it's interesting how it has a musical quality. The game is not in your face scary, so neither is the music - it can even sound somewhat nice at times, but there is always this subtle "something is wrong" feeling. Someone commented that eventually even the eyeballs began to feel comforting, as at least it didn't feel like they were all alone (which shows how dark the atmosphere gets)! If you start to map out the maze, you'll notice something else is quite wrong with the maze as well!