I must admit that at first I was hesitant to post this. The song dropped a day or two ago -- whenever it was, it was *after* Christmas, so the title threw me off.
The timing makes sense when you think about it -- Deadmau5 probably had some free time on his hands (I can only assume that with a name like Joel Zimmerman he might be Jewish), so he spent it re-editing "I Remember," a track he worked on with Kaskade. That said, it still has "Xmas" in the title, and I'm pretty much over Christmas at this point.
In the end, I caved. This song is too awesome to not highlight.