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The image above shows the “Notes-Only” version of the Numbered Notes system. As its title indicates, this system emphasizes the use of numbers for identifying pitches, but this version omits the numbers. (The Numbers-Only version uses the numbers themselves as noteheads, and a third version presented on the Numbered Notes website, has numbers printed in front of each notehead, the way accidentals are in traditional notation, as an optional learning aid.)
Rhythmic notation is the same as in traditional notation. The Numbered Notes staff is rare in that it spaces its lines a minor third apart. (Hass notation, Drielijn notation, and Lautus notation also have this minor-third spacing. Minor-third spacing was discussed by Siemen Terpstra, one of the evaluators during the MNMA’s Research Project. A minor-third-spaced staff has been described by Peter Hass, and also on the Music Notation Project Forum, as a good notation for the chromatic button accordion, whose isomorphic button layout has pitches arranged in rows of minor thirds, a 4-4-4 pattern.)
First Introduced: 2009, Numbered Notes Website
Source: Jason MacCoy, Numbered Notes Website
Similar Notations: Untitled by Robert Stuckey, which also uses numbers for noteheads.
On the version that has numbers printed in front of each notehead, see our criterion 17.