Demdike Stare - Tryptych
Demdike Stare are two dudes who make creepy electronic music that is pretty ambient. Tryptych is a collection of stuff they released in 2010 and it is very very long. How long you say? How about 140 minutes long.
I freaking loved nearly everything on here. Some tracks can be a bore, like Matilda's Dream, which is 10 minutes of nearly exactly the same thing. But I totally recommend it to anyone who is a fan of dark ambient or just creepy music in general. You'd want to listen to it in a dark room with your headphones turned way up.