I always thought it was cool when senior citizens could rock a set on stage... I worked for a mobile DJ in the 80's as a nice part time gig... one of the most memorable nights was a late 30's high school class reunion(50th)... most of those old fellas were WWII vets and the night was all big band and lots of swing music. When those old guys hit the floor... Wow. Years later watching the best of CW dance crowds in action they still couldn't hold a candle to those guys that night.
BTW, for those wondering... The guy I worked for was a Tech by trade.