Denemo is a music notation program for Linux that helps you quickly prepare notation for publishing with Lilypond. Denemo does NOT strive to display all notation graphically or be the most complete graphic enviroment. Denemo is a front end to Lilypond. If you are looking for a WYSIWYG editor Denemo may not be for you. If you are looking for a way to quickly prepare scores for final editing in LilyPond give Denemo a whirl
