Chord · 11ths
A9♯11 — A Dominant 9th ♯11
A9♯11 is the A dominant 9th ♯11 chord. It is built on the root A with major 3rd (C♯), perfect 5th (E), minor 7th (G), major 9th (B) and augmented 11th (D♯) above it — the formula 1 3 5 ♭7 9 ♯11, sounding the notes A C♯ E G B D♯. 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 A9♯11.
- Root
- A
- Quality
- Dominant 9th ♯11
- Formula
- 1 3 5 ♭7 9 ♯11
- Notes
- A C♯ E G B D♯
On the keyboard
The notes of A9♯11
| 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 | major 9th | B4 |
| ♯11 | D♯ | augmented 11th | D♯5 |
Other 11ths on A
Dominant 9th ♯11 chords on every root
Part of the chord reference. See also the scales and the keys.