Chord · 9ths
A♭9♭5 — A♭ Dominant 9th ♭5
A♭9♭5 is the A♭ dominant 9th ♭5 chord. It is built on the root A♭ with major 3rd (C), diminished 5th (E𝄫), minor 7th (G♭) and major 9th (B♭) above it — the formula 1 3 ♭5 ♭7 9, sounding the notes A♭ C E𝄫 G♭ B♭. On the piano it sits at Ab (octave 4) and above in the library's voicing; the same 5 notes in any octave are still A♭9♭5.
- Root
- A♭
- Quality
- Dominant 9th ♭5
- Formula
- 1 3 ♭5 ♭7 9
- Notes
- A♭ C E𝄫 G♭ B♭
On the keyboard
The notes of A♭9♭5
| Degree | Note | Interval from the root | Pitch |
|---|---|---|---|
| 1 | A♭ | root | A♭4 |
| 3 | C | major 3rd | C5 |
| ♭5 | E𝄫 | diminished 5th | E♭♭5 |
| ♭7 | G♭ | minor 7th | G♭5 |
| 9 | B♭ | major 9th | B♭5 |
Other 9ths on A♭
Dominant 9th ♭5 chords on every root
Part of the chord reference. See also the scales and the keys.