Chord · 9ths
F♯dim7/9 — F♯ Diminished 7th / 9th
F♯dim7/9 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 F♯dim7/9.
- Root
- F♯
- Quality
- Diminished 7th / 9th
- Formula
- 1 ♭3 ♭5 6 9
- Notes
- F♯ A C D♯ G♯
On the keyboard
The notes of F♯dim7/9
| Degree | Note | Interval from the root | Pitch |
|---|---|---|---|
| 1 | F♯ | root | F♯4 |
| ♭3 | A | minor 3rd | A4 |
| ♭5 | C | diminished 5th | C5 |
| 6 | D♯ | major 6th | D♯5 |
| 9 | G♯ | major 9th | G♯5 |
Other 9ths on F♯
Diminished 7th / 9th chords on every root
Part of the chord reference. See also the scales and the keys.