Digital ocular harpsichord designed according to 1735 father Castel's writings.
Synaesthetic instrument where each note played sparks a specific color, for example blue for C, yellow for E and red for G.
The lower the octave, the darker the color, and higher octaves show lighter colors.

The user choses the number of keys he wishes to appear according to his dexterity, the octave in which he wants to play and the volume of the instrument.
He also choses his design among 10 proposed patterns.