MEI 2013

The full MEI 2013 release is available from here. Besides that, the following materials are provided separately:

Schemata

The following RelaxNG schemata files may be used for validating XML against the MEI format. These files also contain further restrictions expressed in Schematron. It is recommended to use an XML editor capable of validating against these additional rules as well.

The most common version of MEI. This file includes only Common Western Music Notation support in MEI, deactivating other repertoires.
This file includes only Mensural Notation support in MEI, deactivating other repertoires.
This file includes only Neumes support in MEI, deactivating other repertoires.
This file allows all repertoires at the same time. Use only if you really have to support multiple repertoires in the same file.

Documentation

The documentation of the 2013 release, containing Guidelines, a tag library, and further documentaiton of the technical module structure of current MEI, is available as a PDF.