Chord · 9ths
Fdim7/9 — F Diminished 7th / 9th
Fdim7/9 is the F diminished 7th / 9th chord. It is built on the root F with minor 3rd (A♭), diminished 5th (C♭), major 6th (D) and major 9th (G) above it — the formula 1 ♭3 ♭5 6 9, sounding the notes F A♭ C♭ D G. On the piano it sits at F (octave 4) and above in the library's voicing; the same 5 notes in any octave are still Fdim7/9.
- Root
- F
- Quality
- Diminished 7th / 9th
- Formula
- 1 ♭3 ♭5 6 9
- Notes
- F A♭ C♭ D G
On the keyboard
The notes of Fdim7/9
| Degree | Note | Interval from the root | Pitch |
|---|---|---|---|
| 1 | F | root | F4 |
| ♭3 | A♭ | minor 3rd | A♭4 |
| ♭5 | C♭ | diminished 5th | C♭5 |
| 6 | D | major 6th | D5 |
| 9 | G | major 9th | G5 |
Other 9ths on F
Diminished 7th / 9th chords on every root
Part of the chord reference. See also the scales and the keys.