The latest thing that science is focused on instead of curing cancer: writing the 'perfect' Christmas song.

Dr. Joe Bennett - a musicologist at Boston Conservatory - studied 200 of the top Christmas songs to concoct the perfect holiday track.

It came down to keywords (Santa, snow, home, peace, love, Christmas), major key, uptempo...and lots of sleigh bells!

I've got a Christmas fever! And the ONLY prescription is more sleigh bells!

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