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Tools›Chord Library
Harmony reference

Interactive Chord Library

Choose any root and chord type to see the correct notes, interval formula, sound, keyboard positions and common guitar fingering.

12 roots10 chord typesA4 = 440 Hz
Selected chord
C
NotesC · E · G
Formula1 · 3 · 5
Note count3

Keyboard notes

Common guitar shape

How to use

  1. Select a root and chord type.
  2. Compare note names and interval formula.
  3. Play the chord to hear its colour.
  4. Save it or continue in Piano.

Accuracy note

Sound is generated with equal temperament using A4 = 440 Hz. Guitar diagrams are shown only where a common standard shape is included; the tool does not invent a fingering when no verified common shape is available.

NEXT STEP

Continue with your chords

Piano Chord PlayerTry the chord notes on the keyboard and hear them together.Chord TransposerMove your chord progression into a different key.

How this tool is checked

Chord notes are generated from named semitone interval recipes. We compare displayed notes across all 12 roots, sharp and flat spellings, supported chord types and the linked piano playback.

The keyboard shows pitch classes and the guitar diagram shows one common voicing where available. Inversions, open/closed voicings and alternate guitar shapes are not exhaustive.

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