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To download Rousseau from the Mac App Store, you need a Mac with OS X 10.6.6 or later. Learn More.


By Norman Schmidt

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Rousseau is a melody notation program accessible to anyone (most useful for musicians) ! The seven-note keypad produces ordinary and numbered musical notation (nmn) that appears on screen to the sound of an Italian harpsichord. Buttons allow for playback, key and octave change, accidentals and formatting. A song from your iReal b collection (if installed) may be chosen as a template and then saved as an .irb file for easy import back into iReal b.

This form of numbered melody notation (nmn) was invented by Geneva-born philosopher and composer Jean-Jacques Rousseau (1712-1778) who first presented the project to the French Academy of Sciences in 1742. It is very similar to currently used Chinese simplified notation.

What's New in Version 1.3

Improved MusicXML export with added 1st and 2nd repeats.
Score background change.


Screenshot 1

Customer Reviews

Can'r save the tunes!

Can't save or esport the tunes I wite. Running OSx10.6.8 on a Macbook Pro. Love the way the data entry works, so straightforward... but I really DO want to be able to save my work!

Very Primitive

The UI is kludgy and I can export a simple ABC file, but cannot import it back in! This might be a good app with some serious development.

View in Mac App Store
  • Free
  • Category: Music
  • Updated:
  • Version: 1.3
  • Size: 3.8 MB
  • Language: English
  • Seller:

Compatibility: OS X 10.6 or later

Customer Ratings

We have not received enough ratings to display an average for the current version of this application.