Itaque cum pinnae manibus tactae propellunt et reducunt continenter regulas alternis opturando foramina alternis aperiundo, e musicis artibus multiplicibus modulorum varietatibus sonantes excitant voces.
Therefore when the keys are touched by the hands, they forthwith move the sliding bars backwards and forwards, closing some holes and opening others. By the art of music, the notes of the organ are struck with manifold and varied modulation.
final_alignments\Vitruvius_Architecture_Book_10.json