Tone and colour are the same wave
Sound is a wave in the air. Light is a wave in a field. Only forty doublings separate them: concert A raised forty octaves stops being heard and starts being seen — as a warm red.
The whole system stands on this bridge: hue carries the pitch, lightness the octave, saturation the force of the touch. A bass C is deep blue, a soprano C almost white; forte is saturated, pianissimo barely a shadow.
Five views of one wheel
Twelve notes can be laid on a colour wheel by more than one rule — and each is true in its own way. A musician hears the circle of fifths. A physicist sees the spectrum. A painter looks for complements. Nature builds by the golden angle. The fifth view is yours.
There is no one right answer. There are four true ones — and one of your own.
Try them on the wheel above. Same piece, different mapping, different painting.
Two directions
Music → painting
Play, upload or hum. Every chord is a brushstroke; the same song gives the same painting, every time. Twenty-four painters each see it their own way.
Painting → music
The rule runs backwards too. Load a photo, a Guernica or a child's drawing — and Paintiano plays it. Twelve composers recompose it in their own voice.
Golden-ratio geometry
The canvas format and the basic cell of every painting come from φ = 1.618 — the ratio nature uses from the sunflower to the galaxy. Not because it is pretty. Because it is the same ratio the ear feels as consonance.
The author
The whole story — from Pythagoras through Newton and Scriabin to the piano in your pocket — is in the book. The one-page summary is free; the full book is free on request.
Try PaintianoBook summary