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), augmented 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♯ | augmented 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.