Hi Angus. Great idea but please also take a look at the Photosyntheis Engine template here in my Melodica Pad as I believe it has so much potential.
https://www.pianobook.co.uk/index.php?eddfile=62245%3A2108%3A1%3A0&ttl=1586762035&file=1&token=77c065b5f7b4f3d97f2214449769be3a020b38768c004345d71809ca86323f92
Regards
Bob