I have learned in the past few years to use MuseScore, which is a platform-independent free software for creating music scores. I programmed a plug-in for it that would auto-generate the guitar chord notations above the piano score based on the notes in the score, and I have now created hundreds of scores. I'm not, at present, publishing the scores anywhere--some are copyrighted, perhaps, and I have simply entered them from their sheet music.

Music is great, and is also one of my passions. I wish I knew more electronics.