Hello There!
We have been in MIDI interfaces production business since year 2000. Besides the many other projects, recently we had a opportunity to convert an old English concertina with removed reeds to MIDI to turn it into "silent" instrument so that its owner can practice while travelling, without disturbing other people in the plain, bus, car etc.
The instrument became pure MIDI controller with three key layouts and air-pressure control over MIDI Volume.
User can change many things via SysEx programming, including key-note mapping, MIDI channel per side, default note velocity, pressure sensitivity and pressure response curves, pressure MIDI controller.
Here is a photo it:
I wrote an article about this conversion that can be downloaded from our site:
http://www.midiboutique.com/downloads/documents/midi_conversion_of_english_concertina.pdf
Any comments/requests are welcome!
Best Regards,
Jordan Petkov
www.midiboutique.com