Matthew Caulfield wrote:

> My careless (and inaccurate) mention of books arranged by August
> Schollaert in connection with the Roenigk Richter started an inter-
> esting thread, capped by Bob Conant's great note on the Richters
> converted by Carl Frei.  It's amazing what the collective knowledge
> and power of MMD is!

There are still some more people out there in the dark, who don't
have Internet access and who would be able to say even more of what
they know, but we indeed have a quite good range of knowledge in here,
that's true!

> Bjorn Isebaert said that Schollaert never arranged music for keyless
> organs (Orgeln mit Tonstufen).

"Orgeln mit Tonstufen"?   Every organ has "Tonstufen"!  If keyless
or with keyframe, that doesn't matter.

 [ Okay, but Bjorn _meant_ keyless!  ;-)   -- Robbie ]

> I've been wondering why that is?  I would have thought, showing
> my ignorance of book music technology, that the arranging process
> and the book-making process would be the same for all organ books
> regardless of whether they ran over a keyed frame or a keyless
> frame.  Can someone talk more about this?

Well, the process is nearly the same, that's true, but in most cases
you can't simply take the book for a keyless organ and play it on one
with a keyframe, or vice-versa.

The reason therefore is that books for keyless organs mostly look
about the same way as piano-rolls do: rows of round holes interrupted
by little bridges.  These don't work on a keyframe.

Second point is the distance between two lines [note or key channels],
which also needn't be the same in both systems.

Third point is that books for keyless organs needn't be as thick as
for keyframe, 'cause they aren't stressed as much.  Probably you are
also not going to put shellac or similar on books for keyless, but
on this point I'm not sure.

greetings by(e) InK - Ingmar Krause

ERlanger drehORGEL-Trio, Familie Krause, erorgelt@erlangen.franken.de