 Following the method of notation suggested by Helmholtz in his classic "On the Sensations of Tone as a Physiological Basis for the Theory of Music", incorporating Ellis' invention of cents, and continuing Johnston's step into "Extended JI", Sabat and Schweinitz propose unique symbols (accidentals) for each prime dimension of harmonic space.In particular, the conventional flats, naturals and sharps define a Pythagorean series of perfect fifths.The Pythagorean pitches are then paired with new symbols that commatically alter them to represent various other partials of the harmonic series (Fig.