Chord Library
Browse every chord in every key with interactive piano and guitar diagrams, notes, progressions and audio playback.
Tap any key to hear it · the root has a ring
A chord is three or more notes played together (a power chord makes do with two). A chord symbol reads root first, then quality: C is C major, Cm C minor, C7 a dominant seventh, Cmaj7 a major seventh. The library covers every root and every quality (major, minor, seventh, suspended, added and altered), and each page gives you the notes it is built from, a piano and a guitar diagram, and the sound.
- Roots
- 21
- Qualities
- 26
- Pages
- 546
- Instruments
- 2
Free online piano
Play any chord on the online piano
Free, in your browser: play with the mouse, your computer keyboard or a USB MIDI keyboard. No sign-up.
All chords by quality
Click any chord to open its page with a full piano diagram, guitar fingering, progressions and audio.
Major21
1 · 3 · 5Minor21
1 · ♭3 · 5Dominant 721
1 · 3 · 5 · ♭7Questions people ask
- How do I find a chord I'm hearing?
- Use the Chord Finder: click the notes you hear on the piano keyboard and the tool will identify the most likely chord (with inversions and enharmonic alternatives). For pure chord theory, browse this library by root and quality.
- What are inversions and which one should I use?
- Inversions reorder the same chord notes so a different one is the bass. First inversion puts the third lowest, second inversion puts the fifth lowest. Use them for smoother voice leading between chords: close inversions sound less jumpy than always playing root position.
- Why so many chord types?
- Pop and rock often use only major, minor and 7. Jazz and contemporary writing add extended chords (9, 11, 13), altered dominants (7♯5, 7♭9, 7♯9) and suspended or added-note chords (sus2, sus4, add9). The library has every one of those qualities on every root. Slash chords aren't separate pages: the inversions on each chord's piano diagram give you the ones built from the chord's own notes, such as C/E and C/G.