Classical, yet very calm.
I love listening to this song, it has so many ideas, so many things that could go with. Like how AllyGrunt said about zombies, that would really work. This is something you ought to listen to whenever you come home with a heavy heart. Heck, you could use it for sad love stories even, ever thought about that? And again, I absolutely love this song, it has depression, hope, and love, keep them coming. =)