There’s somthing about “The Christmas Waltz” that’s hypnotic.  Perhaps it’s the constant swing of III-VI-II-V progressions that lulls you or it could be the Like  the songs says, “And this song of mine, in three-quarter time,” keeps you entranced. 

I hope you enjoy the reharm chords here  using tritone subs and other chords that give this truly amazing and tonal song a little bit of jazz dissonance.