You made this under an hour? Dang thats pretty good. But I can't help but rate it low because it just doesn't sound right to me. I mean, its more gloomy sounding than from what I understand is "Dark." I usually associate Dark with "Badass" or just plain "Evil" but this is just plain gloomy sounding to me.
Still under an hour is under an hour and for this much quality to show is pretty cool in its own right.
If I was aiming for "Dark" I woulda' made the violins have more prominence, replace the piano with a distorted guitar and upped the BPM to like 666 with blazing flame decals.
I obviously have no idea what I am talking about.