Max Richter, Sleep (the full 8-hour version, made 9 by tacking on "from Sleep" to the playlist) -- this is the most beautiful and most tranquil music I've ever heard. I've heard new age music described as music "...with all the evil taken out of it." Well, I don't like it when they take all the evil out of it (except for medicinal purposes -- e.g., Steven Halpern's music), then you get static music like Brian Eno's ambient works. In this case, they left just enough in.