The Gregorio project

The Gregorio project offers tools for typesetting Gregorian chant. These tools include:

• gabc: a notation for representing Gregorian chant using ASCII characters
• GregorioTeX: a TeX style for typesetting scores
• a software application to convert from gabc to GregorioTeX

Together, these tools, added to a TeX installation, allow the user to engrave beautiful Gregorian chant scores.

The Gregorio project consists of 100% free software. It is licenced under the GNU General Public License, version 3 (GPLv3).

The name gregorio comes from the imaginary Latin verb gregoriare, “singing gregorian chant”, in the first person.

This website contains an introduction, documentation and tutorial for Gregorio versions 4.0 and later. Information for ealier versions is available in the GitHub repositories for this website and for the main project.