This is going to show me up as the old pfoof I am, but I like to
be educated.

Several recent postings refer to "20er arrangements" of something
or other.  I am not a composer, musician or arranger, and have no
idea what the term "20er" means.

Will someone please elucidate?  Many thanks!

Lee Munsick

 [ It's jargon for the 20-note keyless crank-organ, and for the
 [ format of the music roll which plays the organ.  -- Robbie