Experience is somewhat clumsy on laptops without mouse. Maybe in 'select mode' the left click could also toggle selected nodes. On tablet the interface makes more sense.
I like how easy it is to enter a progression and generate a musical loop. Harmonic table is great choice for working with chords.
Arpeggios sound great. With a bit of reverb and delay there are some nifty soundscapes in there. The synths themselves could use some improvement.
Sound settings could perhaps be pulled out of modal into main page? I had fun fiddling with settings, I'd like them to be more accessible & exposed.
It would be nifty if 'explore harmony' chords could be dragged onto progression track. Maybe clicking a chord in that modal could make it a active selection and than it could be dragged from selection info.
Thanks for sharing this with us. It looks great already and I'll drop in occasionally to check for updates.