Double-keyboard Steinway

[iumonito]

Check this out.

https://musicandculture.blogspot.com/2007/07/double-keyboard-steinway-piano.html

[pianistimo]

goldberg variations on it.  hmmm.  ok.  i suppose that it might put one's back out though.  maybe not.  perhaps the keyboard is low enough - and you sit on a stool or something.  ever notice how an organ bench is so much taller.  of course,  you have more pedals to worry about - but also - reaching is not a problem there.

the only thing i see here is that the second keyboard is only slightly higher than the first.  wouldn't it be better to raise it and slightly tier it more?  or would that be too organish?  as i see it - those sharp edges of the cut-outs on the ends of the keys of the second keyboard might leave your fingers bleeding.  i'd rather have complete soft keys and have them higher.  maybe it's not possible to string it this way?