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This was fun to play around with, but I wish that there was also a mode to arrange the notes in the circle of fifths, since that places similar key centers next to each other. In the chromatic layout when you perform a chord progression (e.g. try C E- F G7 C) the movement is very slight on the circle of fifths but jumps around here.

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Thanks for the feedback! I really like the circle of fifths too, especially since my primary instrument is accordion, which has the left-hand side arranged in the circle of fifths. Part of the concept for this app was to illustrate the way that polygons can be used to (1) place a pattern of intervals within the set of all chromatic notes and rotate it to shift modes, and (2) fit chords into scales at different positions. The Scale Editor demonstrates these concepts, and it's a bit hard for me to imagine how that polygon-rotating would work with the circle of fifths. Perhaps you just wouldn't be able to rotate anything? I'm open to ideas here!

I like this one:

https://guitardashboard.com/

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