Definition
The Circle of Fourths/Fifths is a visual diagram that shows the relationship between the 12 notes organized in intervals of fourths or fifths. Moving clockwise for fifths (e.g., C to G to D) or counterclockwise for fourths (e.g., C to F to B♭), the circle helps musicians understand key signatures, chord progressions, and harmonic relationships. It's a fundamental tool for music theory and is often used for practicing scales and understanding harmony.
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