Construction
A 9♭5 = Root + Major 3rd + Diminished 5th + Minor 7th + Major 2nd = A, C♯, E♭, G, B
| Note | Interval | Degree |
|---|---|---|
| A | Root | 1 |
| C♯ | Major 3rd | 3 |
| E♭ | Diminished 5th | ♭5 |
| G | Minor 7th | ♭7 |
| B | Major 2nd | 9 |
How to Play the A 9♭5
Right Hand (RH)
Place your right hand over the keys with the thumb on the root. Use the fingering: 1 – 2 – 3 – 4 – 5
Left Hand (LH)
For the left hand, start with your pinky on the root. Use the fingering: 5 – 4 – 3 – 2 – 1
Same Notes, Other Names
The notes A – C♯ – E♭ – G – B aren’t exclusive to this chord. Depending on which note is the bass and how the chord functions, the same pitches also spell:
A 9♭5 : Frequently Asked Questions
What is the A 9♭5 chord on piano?
The A 9♭5 chord contains the notes A – C♯ – E♭ – G – B. On piano, play these notes together to sound the chord.
What notes are in the A 9♭5 chord?
The A 9♭5 chord (A9♭5) contains 5 notes: A, C#, Eb, G, B. Formula: R-M3-d5-m7-M9.
How is A9♭5 used in music?
A9♭5 is used in jazz, fusion, and contemporary music to add harmonic color. It appears as a dominant or tonic chord depending on context.
What is the scale degree formula for A9♭5?
A9♭5 uses scale degrees 1-3-b5-b7-9, giving it its distinctive sound.