Enough of the petulant whining about your daddy & your awful Christmas, Sufjan! Let's hear some fucking RAWK!
And, yes: The Darkness abide.
A Christmas tune by The Darkness makes perfect sense, because they're nothing if not the perfect pop band—sure, they happen to feature loud guitars, and dress in tight unitards like a hair metal band, but they're just pop artists at heart! This is sort of an amazingly bouncy power ballad, highlighting Justin Hawkin's amazing falsetto.
As an aside, I really love the domain name of The Darkness' web site: thedarknessrock.com. It's as if they want to quell any doubt: "Do The Darkness rock? Well, they must, because their website says they do!"