Exercise no. 10 in Pischna is to be done in all keys. The exercise is given in C major with a particular fingering to be followed, which is fine for C major, but is it really intended to be used for the other keys? Try it in C# major, for example, it is very strange. What is Pischna up to?
Thanks -- I have only learned about 10 of the Pischna exercises so far but I am completely fascinated by them. Have you done all 60? What do you think of Pischna generally?