Virtual Abbey has three Advent playlists on YouTube--two traditional and one more contemporary.
Please click the link above and check them out. Scroll down on the page until you see the Advent playlists. Not every song, or every artist, will be to everyone's taste, but it is a nice alternative to starting Christmas too early.
Edited to add: I'd forgotten that I made my OWN Advent Playlist!! The music there is more traditional. Click on the link to check it out.