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Modulo Music Notation System

Chromatic Scale

Modulo is an alternative music notation system.


Why should some keys be more difficult to read than others?

Modulo Notation has its own intonation system and key signatures although these are not strictly necessary to be able to read the music. Modulo can thus preserve all information contained in traditional notation. Its intonation system is more or less "key neutral" in that it treats all keys in a similar way. It is strongly recommended to use these alternative key signatures and accidentals in tonal music since they can effectively have an impact upon the interpretation of a piece. Although Modulo is a notation suitable for all kinds of musical instruments, it is especially well suited for the CBA (chromatic button accordion). The first row of a CBA will be represented by hollow note heads; the second row will have solid black note heads placed on lines; the third row will have solid black note heads between lines.


SaLaTa is the note naming, interval naming, and chord symbol system that Modulo always uses. The document also shows how to analyze music using SaLaTa.

Modulo Notation

The PDF primer to Modulo Notation. The Features link above, provides references to this document. The primer also shows an example of what the new notation looks like in action, compared to traditional notation, with an excerpt from Claude Debussy's "Ce qu'a vu le vent d'Ouest". In that particular excerpt, Modulo Notation preserves and presents all information from traditional notation. It would, however, also be possible to use no key signatures or accidentals at all, or to apply a different key signature that would minimize the use of accidentals.

Manuscript Paper

Manuscript paper with ten blank staves.

Spring Song

The MNP (Music Notation Project) has a wiki page where a specific excerpt of music, written for pipe organ, is being represented in a number of different musical notations. The following document shows what this particular excerpt (from MacFarlane's "Spring Song") looks like in Modulo Notation.

A new music notation file format is being developed where the above excerpt has been translated into a text file.

Modulo Notation's File Format

Nydanalyzer - SaLaTa version

Here is the SaLaTa version of the cut-out model that allows you to measure intervals and see how Pythagorean tuning works.

Microtonal Keyboard - SaLaTa version

The new microtonal keyboard - now with SaLaTa note names.

Modulo Notation and SaLaTa were brought to You by Nydana, Sweden.

Dan Lindgren: Contact Information