The attic is looking very good, but there are some minor issues which I think will be easy to fix:
The wood grain on the beams and the posts should run parallel to the beam. Now it looks kind of funny when it always runs straight horizontal, even when the posts next to the wall are vertical and the beams on the roof are slanted... Should be easily fixed by adjusting the UVW map.
It's always best to UVW map beams like that when you create them in horizontal position, and then rotate and copy them around.
Another thing: the hole in the batting (?) on the roof looks quite unrealistic. The texture appears as though the material is soft, maybe a tightly packed layer of straw, but the hole has sharp edges as if it's porcelain or something. Even if the material was wood it wouldn't shatter like that, but individual planks would break at different spots creating a completely different appearance.
You're making good progress either way, the atmosphere on the attic is very nice already! I'm looking forward to seeing more of your work.
I think the music fits the theme pretty well, although the composition is very simple as DevilDante noted. The repetitive organ chords create a haunting, old-school horror movie-like atmosphere.
Maybe a bit more dynamic would do it good though: have parts be played at a very silent volume, slowly rising in intensity, and hitting hard at certain spots to create tension.