Is this the happiest Christmas song in the world?

The song was written with the help of Dr Joe Bennett, a Boston musicologist He studied the lyrics, tempo, musical key and vocals of 200 Christmas songs He found the best festive songs have an average tempo of 115 beats per minute His study also found lyrics talking about Santa, snow, home, peace and love, along with sleigh bells in the chorus are important One scientist claims he has created the 'happiest Christmas song ever'.