Thanks to Melvyn Wright for confirming that the 26-note scale is an
extension of the 20-note scale, or what mathematicians call a "proper
superset."  :-)

I'd appreciate it if Melvyn or someone else would publish here the
26-note scale.  I'm curious how the 6 extra notes are allocated between
extending the melody range, filling in missing chromatic notes (just F#
in 20-note), and adding bass notes (besides C and G).

I believe Deleika made organs with 26 notes.  In fact, the standard
20-note rolls have the extra width for 6 more holes, and my Deleika
20-er's tracker bar just doesn't have the last 6 holes drilled in it.
That leads me to suspect that the 26-er just adds more melody notes (e,
f, f#, g, a, b c)?

Also glad that small reed monkey organs are still made.  I have a problem
with the slow attack of free-reed tones, but at least the pneumatic
machines can open the palettes faster than the direct mechanical barrel
or cob players.

Most grind organ rolls have trills and staccato percussive notes --
how well do those fare on reed organs?

Mike Knudsen