Melody & Ear
Circle of Fifths
Tap the circle of fifths to hear key relationships, accidentals, and V-I movement. A visual way to understand keys, modulation, and progressions.
Melody & Ear
Circle of Fifths
Melody & Ear
Circle of Fifths
Tap the circle of fifths to hear key relationships, accidentals, and V-I movement. A visual way to understand keys, modulation, and progressions.
Outer ring: major keys / Inner ring: minor keys — tap to hear
What is this tool?
The 12 keys arranged clockwise in ascending fifths (C→G→D…), so every neighbor shares almost all the same notes. Major keys are on the outside ring, minor keys on the inside.
When it helps
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Memorize sharps and flats per key
A key's position tells you how many accidentals it carries. Makes reading sheet music faster.
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Find natural modulation targets
Adjacent keys differ by only one accidental — the easiest places to modulate to.
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See a key's IV and V at a glance
Tap a key and its subdominant (IV) and dominant (V) light up in color. Great for composing chord progressions.
How to use
- 1 Tap any segment on the wheel to select that key. A chord plays.
- 2 Toggle Major / Minor to focus on the outer or inner ring.
- 3 Ⅰ (violet), Ⅳ (light blue), and Ⅴ (amber) light up to show the closest keys.
- 4 Use the bottom buttons to jump to that key's diatonic chords or scale.
- 5 Keys on opposite sides (e.g. C and F#) are the most distant relatives — compare their sound for fun.
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