Chords with common tones

For those who love to substitute and reharmonize by numbers.

Chord quality Substitution Common tones Example
Same tones in different order
Suspended 4 Suspended 2 perfect fourth above 1 → 5, 4 → 1, 5 → 4 Csus4 → Fsus2 (C F G → F G C)
Major sixth chord Minor seventh chord with root major sixth above 1 → b3, 3 → 5, 5 → b7, 6 → 1 C6 → Am7 (C E G A → A C E G)
Minor sixth chord Half-diminished seventh chord with root major sixth above 1 → b3, b3 → b5, 5 → b7, 6 → 1 Cm6 → Am7b5 (C Eb G A → A C Eb G)
Three common tones
Dominant seventh Diminished seventh with root minor second above 3 → b3, 5 → b5, b7 → bb7 C7 → C#dim7 (C E G Bb → C# E G Bb)
Minor seventh Half-diminished seventh with root minor third below 1 → b3, b3 → 5, 5 → b7 Fm7 → Dm7b5 (F Ab C Eb → D F Ab C)
Major seventh Minor seventh with root major sixth above 1 → b3, 3 → 5, 5 → b7 Cmaj7 → Am7 (C E G B → A C E G)
Major seventh Minor seventh with root major third above 3 → 1, 5 → b3, 7 → 5 Cmaj7 → Em7 (C E G B → E G B D)
This page was last modified: 2016 August 14