So of course everyone knows about Skyrim's main theme, which was inspired by Morrowind's, but I've also noticed rerecording of at least one track from Morrowind that made it in. Check it out, see if you recognize it.

http://www.youtube.com/watch?v=8UNLs6WxjsE&feature=related

Does anyone know of any other songs that return to Skyrim that are from previous games?