Circle of Fifths Explorer: Keys, Chords & Key Signatures

Click the wheel to explore keys, chords, and relationships.

7 Chords in C Major

C
Major
Key Signature
0
No sharps or flats
Relative Minor
Am
Parallel Minor
Cm
Dominant
G
♪ Songs in C Major

Key Comparison & Modulation

Find the path between any two keys
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💡 Why This Matters

Modulation — changing keys mid-song — creates emotional movement. The shorter the path between keys, the smoother the transition. Keys that share chords (like C and G) are "close friends" and can borrow from each other easily.
Example: C Major and G Major are 1 step apart. They share 6 of 7 notes — only F vs F♯ differs. This makes transitioning between them smooth and natural.
Shortest Path
Steps
1 step
Signature Change
+1 sharp
Pivot Chord
G
Common Chords