Keyboards...you can sniff them out.
Perhaps, the grandest was a massive pipe-organ in a stone mausoleum that I could play on weekends. In a chaple, in the form of a cross, sitting before the third story console, the notes from some of the pipes were like playing a carrilion...delayed and off beat to the player's ear but a delight to those below....the mausoleum was delighted to have the bellows "exercised."
Sincerely,
Gargoyle