Construction
A♭ Major 7♭5 = Root + Major 3rd + Diminished 5th + Major 7th = A♭, C, E♭♭, G
| Note | Interval | Degree |
|---|---|---|
| A♭ | Root | 1 |
| C | Major 3rd | 3 |
| E♭♭ | Diminished 5th | ♭5 |
| G | Major 7th | 7 |
Fingering
| Note | Key color | Right hand | Left hand |
|---|---|---|---|
| A♭ | black | index finger (2) | little finger (5) |
| C | white | middle finger (3) | ring finger (4) |
| E♭♭ | white | ring finger (4) | middle finger (3) |
| G | white | little finger (5) | index finger (2) |
Right hand: index finger (2) on A♭, middle finger (3) on C, 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 E♭♭, index finger (2) on G.
Key Signature
A chord has no key signature of its own, but the A♭ Major 7♭5 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♭5 : Frequently Asked Questions
What is the A♭ Major 7♭5 chord on piano?
The A♭ Major 7♭5 chord contains the notes A♭ – C – E♭♭ – G. On piano, play these notes together to sound the chord.