The John Fahey album "America" makes a good start to a hung-over morning - or the end of a stressed-out day for that matter. Long lilting acoustic guitar instrumentals that are easy on the ear, but have enough going on to keep you interested. You can focus on the simple sounds or let your mind drift away, it's all good.
PS: Not sure what happened to this album; when I bought it, I'm sure it had just four tracks, but according to Amazon the cd version now has thirteen.