Where Have All The New Xmas Songs Gone?

It was about a fortnight ago in the middle of Sainsbury's that it happened. Suddenly, and without warning, i suddenly felt Christmassy. The reason for this unexpected turn of events that led me from 'damn, it's raining again' to 'wow, it's almost Christmas' was the first bars of festive music.
I think i even smiled at the checkout boy rather than eyeing him suspiciously as i entered my chip and pin number.
Christmas is probably the only time of year you can get away with humming songs sung by Cliff Richards or Bon Jovi without your image suffering terminal meltdown but most of the decent Christmas songs that clog up the ears this time of year are all decades old.
The 70s and 80s were the high point for the sound of sleigh bells on three minutes of some bloke singing about snow or calling someone a scumbag and maggot as The Pogues did in Fairytale of New York.
So where are all the new relentlessly jolly or teeth rottingly sweet Christmas songs? Pushing to one side Cliff Richards (someone, please), our charts over the last decade have been almost as dry as Betty Fords liquor cabinet when it comes to seasonal tunes.
Come on you pop stars, there are only so many times i can hear Merry Xmas Everyone as I step into a high-street shop. Put down the pretence that your far too cool to do Xmas, pick up your guitar and write something jingle belly, comforting, familiar, and irritating.
Everyone except you Spice Girls, you have overdone your irritating quota.