This suffers from the limitation of many generative music algorithms/tools in that you're locked into a key (in this case C major - no black notes are played at

This suffers from the limitation of many generative music algorithms/tools in that you're locked into a key (in this case C major - no black notes are played at all), which makes it a cool toy and research project, but of no real use to anyone. Most of what makes good music good (or interesting music interesting if you'd prefer) comes from harmonic interplay and shift. Bach was a master of this. If you listen to the unaccompanied 'cello suites[1] then what makes the music so fascinating is that even though only one note is being played at a time, the harmonic landscape is shifting and changing (often in 'unexpected' ways) all the time. Doing this with algorithms and making it sound good is hard, and nobody's (afaik) done it well yet. 1: https://www.youtube.com/watch?v=rGgG-0lOJjk https://www.youtube.com/watch?v=rGgG-0lOJjk