Fith Isochronic Drones

We can clearly see how the natural hearing of harmonic resonances generated the desire to imitate and amplify them, whether by the accompanying instrument or by the distribution of roles among the singers. The drones at the fifth and the quintoy using the harmonic followed. By the resonant evidence, the perfect chord in its turn took its ease in this descent of the celestial harmonics embodied in the earthly polyphony.