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Welcome to the mei-friend Help pages. Here you will find documentation and help for the mei-friend “last-mile” music encoding editor. Please take note of the conventions and caveats that apply to this documentation.

mei-friend is intended to alleviate the common task of cleaning up encodings in the Music Encoding Initiative’s (MEI) XML format. These may be generated via optical music recognition, or via conversion from other formats. mei-friend is a full-featured, cross-browser compatible Web application, with optimised performance and an extended set of features. The application is available online at

Screenshot of mei-friend
Screenshot of mei-friend showing an excerpt of Beethoven's Op. 77 encoded after the Breitkopf and Härtel complete edition, showing a view with the notation panel is at the left-hand side, the editor window with validation messages, and a beam element selected.

In the navigation menu, you will find: