There’s a scene in Willy Wonka and the Chocolate Factory where a little flap in the wall flips down to reveal a small organ embedded there. Gene Wilder plays a bit of Rachmaninoff on the organ, and the giant door to the chocolate room slowly creaks open.
This is a companion discussion topic for the original entry at https://hackaday.com/2024/03/19/2024-home-sweet-home-automation-a-piano-controlled-smart-home/