If you are an American expat, or something along those lines, and are in the mood for some Christmas music, you might have already taken a look at "iTunes Radio", and had a hard time to find any, because even the ones carrying Christmas in their name don't quite cut it...
A good trick is to go for the Adult Contemporary section:
... and select a soft rock station, such as "Soft Rock from St. Louis", which is what we listened to today. These stations have a tendency to switch to Christmas music during the season, and should serve all your Christmas music needs, even if there's no way you can receive it on your local radio tuner.
Have fun, and happy holidays.