a friend lives in a 175 year old house. it has had 2 additions over the years, a 20X30 rear portion, and a 30X30 living room/kitchen off the side. there was an uprite piano in the 30X30 section when he bought it. after finishing restoration of the original house lower floor, he moved the piano back into it and it started playing by itself. i told him to stop, pianos dont play with no one near them.
this went on for a few years. then one day we were in the kitchen, and heard the piano playing went into the old section, and it stopped. but no one was there. he said now you believe me, huh?
this went on for another 3-4 years until there was a fire in the old carriage house. during cleanup we found a headstone of the original owner and builder of the house, who was also a piano player, and that piano was his..
apparently he was buried behind the house and when the 20X30 rear addition was added, they moved the stone to the carriage house.
after doing some research we found the burial details and cleared rite up against the foundation and placed the stone against it, as close to the original grave site as we could.
the piano never played on its own again.