Oooh, Christmas music!

Some of my favourites are:

Stevie Nicks: Silent Night (a favourite for many years, I now have it from iTunes as well as a vinyl copy of A Very Special Christmas)
Eagles: PCHFC (forever linked to hearing them live)
David Bowie/Bing Crosby: Little Drummer Boy/Peace On Earth (I think the simplicity of Little Drummer Boy works really well here)
O Holy Night (many versions, usually done as a solo showcase, but I also enjoy a version done by the Corrs - think I found it on YouTube)

Every Christmas season I need to listen to Snoopy vs The Red Baron. It is SO overplayed here, but Christmas just wouldn't be the same without hearing it at least once.

Also the Salvation Army brass band(s) playing some of the really traditional carols. They fundraise outside supermarkets and shopping centres, and I always stop to listen through several songs before putting my money in the bucket. Another essential part of Christmas.