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Shape rotation
Wheel rotation
On mobile swipe left/right to rotate the shape and up/down to rotate the wheel. On the browser you can drag the mouse left/right and up/down.
This page is an implementation of Jim Fleser's Chord Wheel it is intended for my personal use. If you are using this implementation you should consider buying his book or his app (which is much more complete than this page).
This tool only works for songs in major keys.