What an awesome rendition of this awesome tune. I loved the transition to and from Jingle Bells, and then the camera started to shake and vibrate when the audience really started to groove at ~6:00.
So, in your expert opinion, just what do ponytails, sandals and socks have to do with the quality of the performance? If you had heard a sound recording would you have any idea that they were wearing shorts? Sheesh, philistine.