It's easy to imagine two people sitting on a piano bench and sharing a keyboard, but twelve people playing one piano at the same time? Is that a piano world's record? Here is video proof of what happens when piano players have too much time to sit around and think.

I am amazed at the precision in which each performer strikes their assigned keys and the fact that all of those players can fit in such a way to be able to actually reach the piano keys.

I think the real trick would be to see how many of these twelve would show up if you had to move that piano. Nothing makes people disappear faster than mentioning you have  piano to move.