Trans-Siberian Orchestra Best Xmas Song Ever? WE HAVEN'T WRITTEN IT YET!! 1 12/20/2013 11:02 AM PST BY TMZ STAFF EXCLUSIVE Balls -- noun -- 14-pound clackers that gives one the courage to say you're about to WRITE THE GREATEST CHRISTMAS SONG OF ALL TIME. See: Trans-Siberian Orchestra. Check out the clip.