Texts by Leonardo Da Vinci's used in Música invisible #1 & #3

Da Vinci’s notebook, chapter "The Perspective of Disappearance"

#1. Aerial perspective

On the contrary the atmospheric medium which exists between the object and the sense incorporates in itself the figure of things, and by its contact with the sense transmits the object to it. If the object--whether by sound or by odor--presents its spiritual force to the ear or the nose, then light is not required and does not act. The forms of objects do not send their images into the air if they are not illuminated [8]; and the eye being thus constituted cannot receive that from the air, which the air does not possess, although it touches its surface.

#3. Anamorphosis

"The shadow or object mirrored in water in motion, that is to say in small wavelets, will always be larger than the external object producing it.

The number of the images produced by the flash of lightning on the waves of the water were multiplied in proportion to the distance of the spectator's eye."