A suggestion: show pitch constellations[1]. Piano/violin music theorists have written me that these were helpful in [2]. (I'd offer you code, but it's so ancient that it's probably not helpful :-( )
Just a heads up that your fingerboard app seems to be working incorrectly regarding displaying the names of sharps and flats on the fretboard diagram (in some cases).
For example, if I load the page and immediately click on an Eb on the piano, the fingerboard layout is correct, and the correct scale degrees are highlighted, but Eb are labeled as Db in the fretboard diagram. Similarly Bb are labelled as Abm etc. It seems like you just switched the sharp/flat symbol without also switching the note letter.
Otherwise awesome tool, this will be very useful for me!
For example, if I load the page and immediately click on an Eb on the piano, the fingerboard layout is correct, and the correct scale degrees are highlighted, but Eb are labeled as Db in the fretboard diagram. Similarly Bb are labelled as Abm etc. It seems like you just switched the sharp/flat symbol without also switching the note letter.
Otherwise awesome tool, this will be very useful for me!