F#9 Chord on Guitar
F#9 = F# – A# – C# – E – G# (Root, Major 3rd, Perfect 5th, Minor 7th, Major 9th)
F#9 is built from the same second-fret barre as F#7, with the top string's root raised two frets to add the ninth on top. The shape keeps the flatted seventh that gives F#7 its pull, then decorates it — the ninth doesn't change the chord's function so much as brighten its color, which is exactly why dominant-9 chords are so common in funk and soul rhythm playing.
The notes are F#-A#-C#-E-G#: root, major third, fifth, minor seventh, and ninth, with the root and fifth each doubled across the six strings. As the dominant of B major, F#9 pulls toward B with the same urgency as a plain F#7 but with a rounder, less biting edge — the ninth softens the dissonance of the flatted seventh against the root. That makes it a natural choice anywhere a straight V7 would sound a little plain, particularly in soul, R&B, and funk rhythm parts where the ninth's color is part of the genre's vocabulary rather than an occasional embellishment.
Fingerings
Barre (2nd fret)
How to Practice It
Start from the F#7 barre you likely already know, then practice lifting the high e-string finger up two frets to land the ninth — that's the only string that moves. Because the chord leans on rhythmic bite rather than sustain in funk contexts, work on quick chucking strums that mute the strings with the fretting hand right after the attack, rather than holding the chord to ring out. Keep the barre finger pressure even across all six strings even when the strum only grazes the top four.
Common Progressions
- F#9 – B (V9 – I in B major)
- F#9 – E – A – F#9 (V9/IV-ish funk vamp resolving back to itself)
- B – F#9 – G#m – E (I – V9 – vi – IV in B major)
- F#9 – E9 (a static two-chord funk vamp, borrowing the same voicing shape a fifth away)
FAQ
- How does F#9 differ from F#7 in the hand?
- Only the high e string changes — instead of staying at the barre fret (the root), it moves up two frets to sound the ninth, while the rest of the F#7 shape is untouched.
- Does F#9 resolve the same way F#7 does?
- Yes — as the dominant of B major it still wants to move to B, since the essential tension (the flatted seventh against the root) is unchanged; the ninth is decoration, not a change of function.
- Is F#9 harder to play than F#7?
- Not really — it's the identical barre with one finger repositioned, so anyone comfortable with the F#7 shape can add the ninth with very little extra work.
- Why is F#9 associated with funk guitar specifically?
- Funk rhythm playing leans on dominant chords with added color tones (9ths, 13ths) played in short, muted stabs rather than sustained strums, and this five-note voicing (root, third, fifth, seventh, ninth) is a compact, movable way to get that sound anywhere on the neck.
- What note gets left out of this F#9 voicing?
- Nothing from the core chord is dropped — this six-string realization actually manages to sound all five chord tones (root, third, fifth, seventh, ninth) by doubling the root and fifth once each.
F#9 on other instruments: F#9 on Piano. Related: how chords are built, chord finder.