That light action for pianos sounds interesting, but I replied[1] to your other comment so maybe we should keep the discussion on that thread. As for organs on

That light action for pianos sounds interesting, but I replied[1] to your other comment so maybe we should keep the discussion on that thread. As for organs on the other hand, I used to play a Victorian frankenstein^W 'hybrid' tracker organ in my local church (sadly now closed). The keys on that poor organ were certainly a work-out for the fingers, and of course got stiffer the more stops that were pulled out. I personally believe that it is valuable to maintain these now-rare tracker organs for their historical merit - they were arguably the most complex machines ever created before the electronic digital computer took that title. However, when it comes to music, I'm not a purist: there is nothing about the stiffness of the keys inherent to the sound of a pipe organ, so I'm all for pneumatic control. Electronic keys also work well if care is taken to reduce the overall latency, as witness by the success of the Wurlitzer theatre organs. [1]: https://news.ycombinator.com/item?id=37054825 https://news.ycombinator.com/item?id=37054825 [2]: 'Hybrid' this instance means an original nineteenth-century tracker mechanism, combined with a 20th century blower and an electronic organ invisibly integrated into the instrument. Actually, not so invisibly, as it frequently malfunctioned. There is also record of a pneumatic action somewhere, but I haven't located it myself.