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The two lines of the staff represent E and G#/Ab. Above and below the staff a leger line is used to represent C. Between any two adjacent lines, including the leger line, there are three elevations on which notes can be placed. The standard staff spans two octaves as pictured above. All the notes are black and circular. A novel rhythmic notation is used.
Earliest documentation: 1956 (Skapski, G. “Some Aspects of Music Notation and a Proposed New System,” Masters Thesis, University of Tulsa)
Source: Directory of Music Notation Proposals section/page: 10/29, 11/2, 13/89
(Note that this manuscript paper has been revised since the MNMA’s Research Project, so that it is now more in-line with the inventor’s intentions.)