Jingle Bells

I took piano lessons for many years and every year on Christmas morning my dad would turn on the video camera and I would play a Christmas song on the piano before we started opening our gifts. Looking back this was probably to buy my parents some time to get coffee/diet, but regardless it was our tradition. Charlie has always loved playing the piano at my parents house and on Thanksgiving while he was playing he started singing jingle bells. I am not sure where he learned the jingle bells song, but apparently he knows it. He is quite the piano player, isn't he?