mscore: MuseScore ( music notation editor ) 
mscore:
mscore: MuseScore is a free cross-platform WYSIWYG music notation program,
mscore: that offers a cost-effective alternative to professional programs 
mscore: such as Sibelius and Finale.  You can print beautifully engraved  
mscore: sheet music or save it as PDF or MIDI file.                       
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