You've heard it many times over, but do you know the history of this definitive Christmas song?

Penned on a hot summer day as a way to cool down by Bob Wells and Mel Tormé, Nat "King" Cole's "The Christmas Song" went on to become one of the most popular holiday tunes of all time, from his first 1946 recording that earned him a place in the GRAMMY Hall Of Fame to the definitive 1961 stereophonic version we hear most often today.