If you mention “The Christmas Song” many people won’t know what you’re talking about. But if you sing the opening line of that Nat King Cole classic “Chestnuts roasting on an open fire,” there will almost always be a flicker of recognition.

“The Christmas Song” is an “old chestnut,” a classic that remains entertaining. Has “The Christmas Song” lost its charm since it was written by Robert Wells and Mel Torme in 1945? I think not.