The drawing of the organ is very small, but the design is extremely clear. Leonardo positions two of his twin bellows on the sides of the organ, making a total of four bellows. The musician, acting on his own, could pump wind with his legs and play with both hands free, while the system provided a continuous air flow. Leonardo3 reconstruction is a world première.
Machines
Great Continuous Organ
Codex Madrid II, folio 76r