Proportional Chromatic Musical Notation
by Henri Carcelle, 1977

Chromatic scale from C to C in Proportional Chromatic Musical Notation by Henri CarcelleC C#/Db D D#/Eb E F F#/Gb G G#/Ab A A#/Ab B C

Proportional Chromatic Notation by Henri CarcelleAs shown on the right, Carcelle’s notation has been designed to be read vertically from top to bottom like Klavar notation. Pitches ascend horizontally from left to right like on a piano keyboard. The standard staff spans about an octave and a half. It has a symmetrical set of nine lines combining solid, dotted, and dashed lines. The last three repeat the first three in the following pattern: solid, dotted, solid, solid, dashed, solid, solid, dotted, solid. Traditional noteheads and time values are used.

Earliest documentation: 1977

Source: Directory of Music Notation Proposals, section/page: 13/16

Similar notations: 6-6 Klavar by Cornelis Pot