There is a lot of good information here. If you’re new to midi, it may take a bit to digest (well, it did for me anyway), but you’ll be thinking in the right direction and be able to try some things out. If you’re not using orac though it’s a lot simpler than all this and (I think) mostly covered in the manual. You should be able to get all three devices (the controller the organelle, and another synth) working together (with orac), it’s just a matter of figuring out how.