I mean, you could definitely build a bespoke organ for the proposal above: You wouldn't need a manual (keyboard), or any sort of other bits and bobs required fo

I mean, you could definitely build a bespoke organ for the proposal above: You wouldn't need a manual (keyboard), or any sort of other bits and bobs required for performance (stops, pistons, couplers, pedals). Mini wind chambers per pipe, probably with an interconnected tubing so you could set up this big ring of pipes for people to walk around and observe. As for pipes, it'd just be one rank of pipes—not scores of them like with typical organs—and probably just one blower and bellows. And, given the nature of the performance, some sort of self-powering renewable energy source and battery backup.