I forgot about the original tuning. I think this is difficult to hear because very subtle.
You can change the tuning for individual notes for individual parts and set it to all those various arabic and kirnberger scales that you need a text book to figure out what is going on.

As I see it all the natural instruments have their own tuning curve, a real piano is not tuned equal temperament but higher at the top and lower at the bottom. So if you do your own scaling you can implement it exactly as the screen or keep this natural tuning curve on top.