Abstract
Description of the universal system for music notation invented by the author, thanks to the data furnished by the electronic analysis of the very differentiated intervals of the traditional Andean musics: Ecuador, Bolivia, Peru . . .
This system makes possible the transcription, analysis and comparative study of all modal musics. It also permits a precise notation of the intervals of contemporary music: micro‐ and macro‐tones. Its conception allows the adaptation of its principle of notation to very diversified divisions of the octave.