Chord · Altered Dom.
A7♭9♭13 — A Altered ♭9♭13
A7♭9♭13 is the A altered ♭9♭13 chord. It is built on the root A with major 3rd (C♯), perfect 5th (E), minor 7th (G), minor 9th (B♭) and minor 13th (F) above it — the formula 1 3 5 ♭7 ♭9 ♭13, sounding the notes A C♯ E G B♭ F. On the piano it sits at A (octave 3) and above in the library's voicing; the same 6 notes in any octave are still A7♭9♭13.
- Root
- A
- Quality
- Altered ♭9♭13
- Formula
- 1 3 5 ♭7 ♭9 ♭13
- Notes
- A C♯ E G B♭ F
On the keyboard
The notes of A7♭9♭13
| Degree | Note | Interval from the root | Pitch |
|---|---|---|---|
| 1 | A | root | A3 |
| 3 | C♯ | major 3rd | C♯4 |
| 5 | E | perfect 5th | E4 |
| ♭7 | G | minor 7th | G4 |
| ♭9 | B♭ | minor 9th | B♭4 |
| ♭13 | F | minor 13th | F5 |
Other altered dom. on A
Altered ♭9♭13 chords on every root
Part of the chord reference. See also the scales and the keys.