Chord · Altered Dom.
F7♯5♭9/11 — F Altered ♯5♭9 / 11th
F7♯5♭9/11 is the F altered ♯5♭9 / 11th chord. It is built on the root F with major 3rd (A), augmented 5th (C♯), minor 7th (E♭), minor 9th (G♭) and perfect 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♯5♭9/11.
- Root
- F
- Quality
- Altered ♯5♭9 / 11th
- Formula
- 1 3 ♯5 ♭7 ♭9 11
- Notes
- F A C♯ E♭ G♭ B♭
On the keyboard
The notes of F7♯5♭9/11
| Degree | Note | Interval from the root | Pitch |
|---|---|---|---|
| 1 | F | root | F4 |
| 3 | A | major 3rd | A4 |
| ♯5 | C♯ | augmented 5th | C♯5 |
| ♭7 | E♭ | minor 7th | E♭5 |
| ♭9 | G♭ | minor 9th | G♭5 |
| 11 | B♭ | perfect 11th | B♭5 |
Other altered dom. on F
Altered ♯5♭9 / 11th chords on every root
Part of the chord reference. See also the scales and the keys.