Whenever I think of an accordion I am reminded of my mom watching the Lawrence Welk show. There was a man on this show who was quite talented at playing the accordion.
This is a musical instrument that you don't seem to hear much about anymore. When I have watched someone playing a piano accordion it looks like there are several things going on at once.
Not only do you have to use the buttons on one side, but you also move the accordion in different positions at the same time.
For me, this looks like something that would take a lot of practice to be very good at. I have always been somewhat fascinated with these instruments. If I ever came across a used piano accordion I would be tempted to buy it and see if I could learn how to play it.