You may wish to contact the editor of this edition - his name is Siegbert Rampe.</p>


Or perhaps the info from his websitewill provide sufficient information:</p>


<font size="1">New Keyboard...

I am new to these wonderful forums; please excuse me if this post does not belong to this particular messageboard. Also, I'm not an organist (sadly), only a composer and an early (i.e. pre-1700/1750)...