My aim is to be able to get a visual aid for finger positions according to Scale/mode and root note chosen. Currently, I have colours changing erraticaly when switching scales and modes. As I said, WIP .
This is based on a similar app I made for myself for guitar some time ago.
It helps going out of the usual stuff.
I found all the scales and modes in the excellent Guitar Cookbook of Romain Morlot.
Looks helpful! Don’t know if this would be of interest to you:
It amounts to using a paper strip with coloured dots across the top of the keyboard, to easily visualise chords/harmonic relationships. I was thinking of getting some nice card and maybe some magnets, and making one to sit on my Gemini and help me learn.
Just sharing in case you find any inspiration there!