F#9 guitar chord
Playable, correctly spelled, and not how the chord is normally voiced. Right now this is the shapes that put a ninth, eleventh or thirteenth below the root.
- Tap a note to hear it
- Arrows change position
- Fingers, notes or intervals
- Play the chord
About F#9 — uncommon voicings
F#9 is F#, A#, C#, E and G# — F#7 with the ninth stacked on top.
It sounds bright and full, still clearly pulling. The ninth adds height without softening the tritone underneath it, which is why funk and soul comp on this rather than on a plain 7.
Dominant — the same pull as a 7, with more colour.
F#9 notes and formula
| F# | A# | C# | E | G# |
|---|---|---|---|---|
| 1 | 3 | 5 | ♭7 | 9 |
Also written F#dom9 or F# dominant 9. The same chord either way; which spelling you meet depends on who wrote the chart.
How to play F#9
Five notes and four fingers, so something has to go. Keep A# and E (they fix the quality) and G# (what the symbol is about). Let C# and F# go, in that order — a perfect fifth says nothing the root has not, and in a band the bass has the root.
Play F#9 as a shell — root, third and seventh — and the spare string takes the #11 (B#), the b13 (D) or the 13 (D#).
All 9 common shapes as fret numbers, lowest string first. Hover or tap one to see it drawn.
- 2121xx, 1st fret, F#, root position, top note G#, all fretted
- 242324, 2nd fret, F#, root position, top note G#, barred
- 242124, 1st fret, F#, root position, top note G#, barred
- xx4354, 3rd fret, F#, root position, top note G#, all fretted
- 6x4654, 4th fret, A#, 1st inversion, top note G#, all fretted
- x98999, 8th fret, F#, root position, top note C#, barred
- x-11-11-11-11-12, 11th fret, G#, 9th in the bass, top note E, barred
- 14-11-11-13-11-12, 11th fret, F#, root position, top note E, barred
- 14-13-14-13-14-x, 13th fret, F#, root position, top note C#, barred
How to use F#9
F#9 is the V of B, and that is where it goes if it goes anywhere: the third and the flat seventh are a tritone apart, and both resolve by a semitone into B.
In a phrase:C#m7→F#9→Bmaj7— the ii–V–I of B.
Voice by voice, F#9 → B. 2 voices move by a semitone, and one note is common to both chords.
| In F#9 | Moves | In B |
|---|---|---|
| F#, the root | stays where it is | F#, the fifth |
| A#, the major third | rises a semitone | B, the root |
| C#, the fifth | falls a whole tone | B, the root |
| E, the flat seventh | falls a semitone | D#, the major third |
| G#, the ninth | falls a whole tone | F#, the fifth |
In which keys. Every note of F#9 belongs to Ab minor (the ♭VII) and B major (the V, the dominant).
What to play over F#9
Every note of F#9 is in F# mixolydian and F# lydian dominant.
Each of those is a page: the scale across the neck, and the chords it harmonises into — which is where F#9 sits in it. Every scale.
Chords near F#9
Change one note of F#9 and you have F#maj9 (the flat seventh becomes the major seventh), F#m9 (the major third becomes the minor third), F#add9 (drop the flat seventh), F#69 (the flat seventh becomes the sixth), F#7 (drop the ninth) or F#9b5 (the fifth becomes the flat fifth).
F#9 is a dominant chord — root, major third, fifth, minor seventh. Dominant seventh chords on every root.
The common shapes and the derived voicings come from different places, and both are explained in how this site is built.