GuidoViewer

GuidoViewer is designed to render Guido Music Notation (GMN) files with automatic music formatting. It supports Quartz, multiple pages, multiple documents, zoom, and printing.

The GMN format is a formal language for score level music representation. It is a plain-text, human-readable and platform independent format capable of representing all information contained in conventional musical scores.

You can edit or create your own GMN files with any third-party text editor.