first time on a Janko piano by Pfeiffer: . Bach : Solfegietto

I wish I could practise on such a piano. Unfortunately, I don´t have one, so I´m just trying it out a little. I would need it, because pianobuilders destroyed my thumbs and my career as a musician and on the janko piano, you don´t need to use the thumbs if they are hurting which happens on the normal piano after only 5 minutes of playing.