Got it to work using that alsaseq2jackmidi bridge. This one does give me the
connections I need. The other such bridges gave me items in the jack-midi
pane but no way to connect them.
Results: Azr3 apparently never gets or executes note-off. Whatever is played
just keeps on going and going and going ...
I do not know if this is a problem in the organ program or in the bridging
program.