MuseScore is an open source and free music notation software. Features: WYSIWYG design, notes are entered on a “virtual notepaper” TrueType font(s) for printing & display allows for high quality scaling to all sizes Easy & fast note entry Many editing functions MusicXML import/export MIDI (SMF) import/export MEI import/export MuseData import MIDI input for note entry Integrated sequencer and software synthesizer to play the score Print or create PDF files