Chord · Altered Dom.
F7♭9♯11 — F Altered ♭9♯11
F7♭9♯11 is the F altered ♭9♯11 chord. It is built on the root F with major 3rd (A), perfect 5th (C), minor 7th (E♭), minor 9th (G♭) and augmented 11th (B) above it — the formula 1 3 5 ♭7 ♭9 ♯11, sounding the notes F A C E♭ G♭ B. On the piano it sits at F (octave 4) and above in the library's voicing; the same 6 notes in any octave are still F7♭9♯11.
- Root
- F
- Quality
- Altered ♭9♯11
- Formula
- 1 3 5 ♭7 ♭9 ♯11
- Notes
- F A C E♭ G♭ B
On the keyboard
The notes of F7♭9♯11
| Degree | Note | Interval from the root | Pitch |
|---|---|---|---|
| 1 | F | root | F4 |
| 3 | A | major 3rd | A4 |
| 5 | C | perfect 5th | C5 |
| ♭7 | E♭ | minor 7th | E♭5 |
| ♭9 | G♭ | minor 9th | G♭5 |
| ♯11 | B | augmented 11th | B5 |
Other altered dom. on F
Altered ♭9♯11 chords on every root
Part of the chord reference. See also the scales and the keys.