Allow me to take a moment, and give you some examples.
Number one: Anyone who at any point in their lifetime would come when called "Gomer". As in Pyle. Several times on the radio station (thank you XM Channel 4 Holiday Traditions, I LOVE you!) I shake my head when I hear Jim Nabors (aka Gomer Pyle) singing. It sounds as if he hase a big furry animal caught in his throat and just ate a huge bite of ice cream to push it down. It is truly terrible. Jim, I'm sorry, I'm sure you don't deserve such punishment. I'm also fairly certain that growing up somewhere there was a Jim Nabors Christmas Album (vinyl of course)...I can picture it now, it was all white...as a connoisseur of Christmas music I don't think I even listened to that one. I must draw the line somewhere.
Another one, is Deck the Halls. Unless you are in a group of -- well, anyone, please don't sing this song. Case in point is Willie Nelson. No one person should ever be Fa la la la la-ing on their own, and Willie, you are no exception. At least get some cowboys to chime in to help you out a little bit.
So what do I like to listen to? Very few Christmas songs can be done poorly (sorry Gomer) which is probably why just about anyone who has ever tasted the flicker of celebrity seems to put out a holiday album, but among my top faves have got to be Silent Night, White Christmas, and Once in Royal David's City -- King's College Choir version.
I think it's time to go start a playlist as I begin to pack as Noll Down South returns to our roots for a little while (and shows these Southern Belles what winter is all about).

