could you be any more constructive, I mean, which parts are confusing / none intuitive?
I also wasn't sure what effect some of the controls were having, but I think it might be because I am on my phone.
- the hover effect makes the lighter color buttons seem to disappear, especially once pressed
- I have no idea what the R button does or why
- pentatonic major is an uncommon scale and odd choice for default - pentatonic minor might be better, or just major
One thing I want to mention is that tool tips or other onscreen help would be useful.