I know of only 2 places in the organ literature of Bach which stretch more than an octave.

No, he stretched the boundaries of his instruments instead!

In spite of the fact that both my parents were piano teachers, I never really learned the piano formally (classical guitar instead). But I taught myself to play a couple of the preludes from the Well-tempered Clavier. I would not have been able to do this had Bach been a contortionist like Rachmaninov!



The idiot also known as Capfka ...