It is the visual map of the Pythagorean Spiral, closed into a perfect loop to resolve the Entropy of the Pythagorean Comma.
The circle works like a clock. As you move clockwise, you jump by an interval of a Perfect Fifth ($3:2$ ratio). As you move counter-clockwise, you move by a Perfect Fourth ($4:3$ ratio).The Sharp Side (Clockwise): Each step adds one sharp ($\sharp$) to the key signature. Starting at C Major (0 sharps), you move to G (1 sharp), then D (2 sharps), and so on.+1The Flat Side (Counter-clockwise): Each step adds one flat ($\flat$). From C, you move to F (1 flat), then Bb (2 flats).Relative Minors: Every Major key has a "Shadow" minor key that shares the same key signature. These are located on the inner ring of the circle.
Researcher Note:
The Dominant Relationship: In any key, the note one step clockwise is the "Dominant." This is the strongest harmonic pull in Western music. It creates the Call to Adventure that demands to be resolved back to the "Home" key (the Tonic).
The Dominant Relationship: In any key, the note one step clockwise is the "Dominant." This is the strongest harmonic pull in Western music. It creates the Call to Adventure that demands to be resolved back to the "Home" key (the Tonic).