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Key/Scale Finder

Identify the key and scale of a song by selecting notes. Find matching major, minor, pentatonic, blues, and modal scales.

Key/Scale Finder

Select notes to find matching keys and scales. Great for identifying the key of a song or finding scales to play over chords.

Select Notes

Selected: None (select at least 3 notes)

Quick Presets

Available Scale Types

majornatural minorharmonic minormelodic minorioniandorianphrygianlydianmixolydianaeolianlocrianmajor pentatonicminor pentatonicbluesmajor blueswhole tonediminishedchromatic

How to use:

  • Click notes to select them (at least 3 needed)
  • The finder will show scales that contain your selected notes
  • Higher percentage = better match
  • Use this to find the key of a song or explore scale options

How to Use

  1. 1
    Select notes — Click on the notes you hear in the song or want to analyze (at least 3).
  2. 2
    View matches — The finder will show scales that contain your selected notes, ranked by match percentage.
  3. 3
    Check the key — The "Most Likely Key" shows the best major or minor key match.
  4. 4
    Explore scales — Browse other matching scales like pentatonic, blues, or modes.
  5. 5
    Use presets — Try the quick presets to see how common scales look.

Frequently Asked Questions

How do I find the key of a song?

Listen to the song and identify the notes being played (especially in the melody and bass). Select those notes in the finder. The scale with the highest match percentage that feels like "home" is likely the key.

What is a relative minor/major?

Relative keys share the same notes but have different root notes. C Major and A Minor are relatives - they use the same 7 notes (C D E F G A B) but C Major resolves to C while A Minor resolves to A.

What are modes?

Modes are scales derived from the major scale by starting on different degrees. Dorian, Phrygian, Lydian, Mixolydian, Aeolian (natural minor), and Locrian each have a unique sound character.

When should I use pentatonic scales?

Pentatonic scales (5 notes) are great for improvisation because they avoid dissonant intervals. The minor pentatonic is especially popular in rock, blues, and pop music.

What if multiple scales match 100%?

This is common! For example, C Major and A Minor share all the same notes. The actual key depends on which note feels like "home" or the tonal center of the music.

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