I have a feeling there must be a patch already, but as I couldn’t find it I wrote this. Very simple, plug a USB Midi keyboard into the Organelle, and standard MIDI out cable to your hardware synth.
Set the output channel, octave up/down, transpose and play.
I’ve sent the ‘pitch bend’ out as well. And there’s a handy feature for when the notes get stuck on - as they do in midi. Hold the Aux button and it sends ‘0’ velocity i.e. note off to every note.