stars of the lid
We recently received the new Stars of the Lid record, and I've been listening to it and watching the snow fall for much of the day (uh, we don't get much snow here). To call this thing "sprawling" would be an understatement (it's going to be released on 2xCD/3xLP), and it's also some of the more evocative and engaging ambient music I've ever heard. My attention span is way too short to listen to this very often, but I imagine ...And Their Refinement of the Decline would make the perfect soundtrack to an epic dream.
Stars of the Lid Apreludes (in C Sharp Major)