In the sub-contra/contra/great/small system, middle C is C1 for even more fun😉
Midi on organs is quite common now. Basically any modern instrument has it. In fact, many organs actually run on midi internally and use a data connection to interface with pipes. I’ve wired up a two manual stack and you solder each contact to a special board, and then just daisy chain the midi cables.
I pre-record our anthems with the midi sequencer all the time so I can start playback and then conduct while we sing. Works a charm and no one is the wiser since no one is looking at the loft.
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Isn’t it great? All the awesomeness and power of the organ with the freedom to conduct. I used to dobthe same with a midi keyboard when I was a church music director. Although, it should be a rule that some hymns can ONLY be played with organ accompaniment🙃 I would have enjoyed seeing the faces of organ builders when Bach explored what kind of guts they had😉
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