And the sound of children's ♪ ♪ Laughter fills the air (Oh, oh yeah) ♪ ♪ And everyone is singing (Oh yeah) ♪ ♪ I hear those sleigh bells ringing (Oh) ♪ ♪ Santa, won't you bring me ...

Analysis: The science behind Christmas songs involves nostalgia, neural pathways, sleigh bells and, yes, Michael Bublé. It's beginning to sound a lot like Christmas, everywhere we go. Over the ...