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Chords

A chord is three or more notes stacked in thirds. Triads have a root, third and fifth; seventh chords add one more third on top.

Triads

• Major chordC · 1 3 5
• Minor chordCm · 1 ♭3 5
• Diminished chordCdim · 1 ♭3 ♭5
• Augmented chordCaug · 1 3 ♯5

Seventh chords

• Major seventh chordCmaj7 · 1 3 5 7
• Dominant seventh chordC7 · 1 3 5 ♭7
• Minor seventh chordCm7 · 1 ♭3 5 ♭7
• Half-diminished chordCm7♭5 · 1 ♭3 ♭5 ♭7