Filter by Root Note All Roots C C#/Db D D#/Eb E F F#/Gb G G#/Ab A A#/Bb B Filter by Quality All Qualities Major 7th Dominant 7th Minor 7th Minor Major 7th Diminished 7th Half-Diminished Augmented 7th Augmented Major 7th Other (non-tertian) Show Labels Tertian Chords Only All Chords None Reset View

Tetrad Chord Map

This graph shows all 495 possible 4-note chords (tetrads) in the 12-tone scale. Edges connect chords that share exactly 3 notes (differ by only 1 note). Hover over nodes to explore. Click to hear the chord. Drag to pan, scroll to zoom.