Testing my 32 note midi organ

I had built these flutes a couple years ago and this project was on hold, but with a broken collarbone now I have time available 🙂.
The organ is not finished yet, but it already plays.
The pipes are tuned to 31-note Raffin scale, plus one additional note. This is a common scale for crank organs in Germany.
Under each flute (inside the windchest) there is a solenoid valve that opens to play each note.
It uses a usb-to-midi adapter and a midi-to-parallel controller.
The blower is a centrifugal compressor (I had bought for something completely different but was not being used). Swapped the 2-pole motor for a 4-pole motor to reduce speed (air volume and pressure). Using a VFD to control blower rpm (=pressure).
I still have to build the pressure controller+reservoir (a bellows with a relief valve) for better pressure control, this will reduce the oscillations seen in the gauge (replacing the makeshift reservoir 😂)
Tbe organ is working at about 15 cm water column pressure (5 to 6 inches H2O).
Tuned to Werckmeister III intonation, but will try "just intonation" yet (due to Raffin scale constraints, all music is transposed to some specific keys, so no point in using equal temperament). With the regulator installed, tuning should be even more stable and precise (although not bad already).
Playing "Tulips from Amsterdam", beautiful arrangement by Melvyn Wright.