Greetings!

I have several questions regarding the (Coinola) 'O'-roll scale. As
many of us who subscribe to this list are very interested in the
instrument-MIDI-instrument process, I thought it was time to initiate
this thread. My questions relate to the *arrangements* of 'O'-roll music
specifically. Very unfortunately, I do not have access to any
devices/collections within many hours' drive, in order to listen for
myself. I am interested in composing and arranging music, via MIDI, for
'playback', ultimately, via 'O'-roll, on band organs and orchestrions.

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Background:¶
The listings in the 'Encyclopedia' show *piano-based* 'O'-roll scales
with:
  'Principal' (P) instrument = flute/pipes, and
  'Secondary' (S) instrument = bells/xylophone.¶
It is a 'given' that the piano plays all of the time.¶
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Questions relative to 'typical' O-roll arrangements:

1. Do both the P and S instruments use the same range of notes
   (piano #62-85) for solos? Are they merely alternate sets of solo
   instruments?

2. Is the piano always intended to be 'damped' in the solo range during
   solos? For both P _and_ S?

3. Is the piano damper's lock-and-cancel activated by both 'P' and 'S'?

4. What about non-piano-based devices? Ex: Pipes/accordion/bells, or
   air calliope/bells.  Should the 'Pipes' play all of the time and the
   'Principal' instrument be ignored? (since the 'swell'-if connected-is
   controlled by P at hole #'s 13 & 19).

5. Do typical 'O'-rolls make better use of P or S as solo instrument?

Thank you for all of your assistance! This info will help me configure my
MIDI system for proper emulation.    -Pete

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 Pete Woodworth - cwoodwor@cymbal.calpoly.edu
 http://www.calpoly.edu/~cwoodwor
 http://www.calpoly.edu/~cwoodwor/midi.html¶
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