 This notation system was created for the kora in the late 1970s by Brother Dominique Catta, a monk of the Keur Moussa Monastery (Senegal).The seven low notes that should be written on the F clef are replaced by Arabic or Roman numerals and written on the G clef.While griots still compose in the traditional way (without writing scores), some Western musicians began to write partitures for the kora and adopted the Keur Moussa notation system at the beginning of the 1980s.