Realforce did this a few years ago with Topre switches (which are capacitive). Here's a video demonstration of someone using a keyboard like that as a piano [

Realforce did this a few years ago with Topre switches (which are capacitive). Here's a video demonstration of someone using a keyboard like that as a piano [1]. [1] https://www.youtube.com/watch?v=mhCSIy-Qt0M https://www.youtube.com/watch?v=mhCSIy-Qt0M