Add chord underlying
Chord that has been recorded
M | m | 7 | M7 | m7 | sus4 | aug | dim | add9 | 6 | m6
Find substitute chord of chord you want to change.
Chord that has been recorded
M | m | 7 | M7 | m7 | sus4 | aug | dim | add9 | 6 | m6
M | m | 7 | M7 | m7 | sus4 | aug | dim | add9 | 6 | m6
M | m | 7 | M7 | m7 | sus4 | aug | dim | add9 | 6 | m6