While we were visiting Gram and Pop we were able to visit a little with Great Grandparents as well. Great Pop used to be a part of a barber shop quartet and he plays the piano VERY well (he claimed he was rusty but I was very impressed). The kids had so much fun dancing along.
I spent almost 24 hours trying to upload a longer video but it never worked. Here is a shorter version, but sadly you don't hear as much of his playing.