Construction
A♭ Major 7♯11 = Root + Major 3rd + Diminished 5th + Perfect 5th + Major 7th = A♭, C, D, E♭, G
| Note | Interval | Degree |
|---|---|---|
| A♭ | Root | 1 |
| C | Major 3rd | 3 |
| D | Diminished 5th | ♭5 |
| E♭ | Perfect 5th | 5 |
| G | Major 7th | 7 |
Fingering
| Note | Key color | Right hand | Left hand |
|---|---|---|---|
| A♭ | black | thumb (1) | little finger (5) |
| C | white | index finger (2) | ring finger (4) |
| D | white | middle finger (3) | middle finger (3) |
| E♭ | black | ring finger (4) | index finger (2) |
| G | white | little finger (5) | thumb (1) |
Right hand: thumb (1) on A♭, index finger (2) on C, middle finger (3) on D, ring finger (4) on E♭, little finger (5) on G.
Left hand: little finger (5) on A♭, ring finger (4) on C, middle finger (3) on D, index finger (2) on E♭, thumb (1) on G.
Key Signature
A chord has no key signature of its own, but the A♭ Major 7♯11 is the tonic (I) chord of A♭ Major, whose key signature has 4 flats (B♭, E♭, A♭, D♭).
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.
B♭E♭A♭D♭G♭C♭F♭
Mnemonic: Battle Ends And Down Goes Charles’ Father
Chords in the Key of A♭ Major
These are the triads built on each degree of A♭ Major:
A♭ Major 7♯11 : Frequently Asked Questions
What is the A♭ Major 7♯11 chord on piano?
The A♭ Major 7♯11 chord contains the notes A♭ – C – D – E♭ – G. On piano, play these notes together to sound the chord.