Galin-Paris-Chevé system

The Galin-Paris-Chevé system is a method of reading music, based on the ideas of Jean-Jacques Rousseau, founded by Pierre Galin (1786–1821) and developed by Aimé Paris (1798–1866), his sister Nanine Paris (1800–1868), and her husband Émile-Joseph-Maurice Chevé (1804–1864).

According to the Genevan philosopher Jean-Jacques Rousseau, the problem with music was that the notation was too complex for any neophyte to learn.

[1] Rousseau's method started with a fundamental sound, ut (in other words, Do), which was expressed by the number 1; then the seven natural sounds of the tempered keyboard (ut, re, mi, fa, sol, la, si) by the seven numbers 1, 2, 3, 4, 5, 6, 7.

The system was made widely known when Nanine Paris and her husband Émile Chevé published their Méthode élémentaire de musique vocale (1844).

Their method is today largely unknown to French and French-speaking musicians, but is used in China under the name of Jianpu (“simplified system”).