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Key Compatibility Checker

Music

Check how compatible two musical keys are for mashups or modulation. See shared chords and pivot points.

ttb run key-compatibility-checker

Key 1

Key 2

90%
Perfect
CG · 1 step on circle of fifths

Shared chords (pivot points for modulation)

CDEGAB
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Key Compatibility Checker の使い方

Select two musical keys to see their compatibility score. The score is based on their distance on the circle of fifths. Shared chords are shown as potential pivot points for modulation.

1

Choose Key 1

Click a note from the top row to set the first key.

2

Choose Key 2

Click a note from the second row to set the second key.

3

Read the score

A green score means easy mixing; red means a challenging transition.

よくある質問

What makes two keys compatible?+
Keys close on the circle of fifths share more chords and have more natural transition points.
What are pivot chords?+
Chords that exist in both keys. You can use them to smoothly modulate (change key) mid-song.
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