The A♭ Major 6 chord is a four-note chord made up of A♭, C, E♭, and F.
Construction
| Note | Interval | Degree |
|---|---|---|
| A♭ | Root | 1 |
| C | Major 3rd | 3 |
| E♭ | Perfect 5th | 5 |
| F | Major 6th | 6 |
A♭ Major 6 Inversions



| Position | Notes |
|---|---|
| Root Position | A♭ – C – E♭ – F |
| 1st Inversion | C – E♭ – F – A♭ |
| 2nd Inversion | E♭ – F – A♭ – C |
| 3rd Inversion | F – A♭ – C – E♭ |
Key Signature
A chord has no key signature of its own, but the A♭ Major 6 is the tonic (I) chord of Ab Major, whose key signature has 4 flats (B♭, E♭, A♭, D♭).
Order of flats
Flats are added in a fixed order — the reverse of the sharp order. Each new flat key adds the next flat on the list.
Mnemonic: Battle Ends And Down Goes Charles’ Father
Chords in the Key of A♭ Major
These are the triads built on each degree of the A♭ major scale:
Same Notes, Other Names
The notes A♭ – C – E♭ – F aren’t exclusive to this chord. Depending on which note is the bass and how the chord functions, the same pitches also spell: