[skybrian]

I play both piano and chromatic button accordion (a little). One thing that seems a bit harder on button accordion is going up the scale playing thirds or sixths, because you need to be aware of which are major versus minor thirds (or sixths) in the diatonic scale you're using. With a piano, the keyboard mostly takes care of this, at least in easier keys.

It seems like this notation has similar issues in emphasizing the chromatic scale over diatonic scales maybe a little too much?