It has a really dark and mystifying feel to it. Kinda sounds like someone just died and there tryin to figure out who did it. Overall its very good. The different instruments play together with good harmony and are able to support eachother without sticking out to much. Also compliments to the fade out ending. Most of the time fade outs dont sound very good but I think you picked a good place to put it. Very well done. I look foward to hearing the extras you plan on adding.
Please contact me if you would like to use this in a project. We can discuss the details.