I see how you can easily create music, but what if someone gives you a piece of chart music and says "learn that", you would have to figure out the music to program it into the app. But, if you could edit the "Notation" section, you could make that look like the piece of chart music and have it show you the result in the app in Notation and app format. There is an app named "Flat" which does this really well, but does not do composition very well, so would elevate your beat note app, way above this. Basically, here is how to write/compose/play music, whether you can read drum notation, or not.