[ Ref. Bob Taylor in 180501 MMDigest --

I have a question for Bob Taylor that is probably based on
misunderstanding.  In your submission you included the following
statement: "As in many Aeolian rolls, the voicing of each rank is
utilized to create an illusion of more than a two-manual rendering.
That is, a single rank may be used as both accompaniment and solo
voice simultaneously but sounding as if two ranks on different
divisions are used."

To my modest understanding, Aeolian usually incorporated individual
chambers that utilized many stops that were duplicated in each chamber.
Each chamber had its own individual swell shades for individual
expression of that division.  Unless an instrument had two identical
ranks of pipes in separate chambers, how could one set of swell shades
be almost closed to provide a greatly muted voice and another set of
swell shades which is open more fully to provide the solo voice?

The Hansel & Gretel performance by Alfred Hertz [on YouTube] is quite
stunning and is worthy of an orchestra.  Well done!

  https://www.youtube.com/watch?v=-lcfv-Hcqs8&feature=youtu.be 

Mike Walter