F♯9 chord on piano
F♯9 is F♯, A♯, C♯, E and G♯. F♯ sits on the first black key of the group of three. Hit Play and watch each key light as it sounds.
root position · F♯–A♯–C♯–E–G♯ · right hand 1-2-3-4-5
- Notes
- F♯ · A♯ · C♯ · E · G♯
- Formula
- 1 · 3 · 5 · ♭7 · 9
How to play F♯9 on piano
From F♯, go 4 half steps up to A♯, 3 half steps up to C♯, 3 half steps up to E then 4 half steps up to G♯. That's the whole chord: 5 keys.
- Right hand: 1 on F♯, 2 on A♯, 3 on C♯, 4 on E and 5 on G♯.
- Left hand: 5 on F♯, 4 on A♯, 3 on C♯, 2 on E and 1 on G♯.
- On the keyboard it's black, black, black, white and black keys.
Two ways to voice F♯9
- root position: F♯–A♯–C♯–E–G♯. Right hand 1-2-3-4-5.
- close voicing: F♯–G♯–A♯–C♯–E. Right hand 1-2-3-4-5.
The close voicing folds the ninth down next to the root, which fits under one hand; the spread voicing sounds wider.
Changing from F♯9 to the chords around it
These are the changes you'll meet most often with F♯9, using the first shape of each chord.
- B (dominant, pulls to the chord a fifth below): F♯9 to B: play B in 2nd inversion (F♯–B–D♯) and F♯ stays under the same finger, while A♯ moves up to B and E down to D♯. B on piano
- Bmaj7 (I in B major): F♯9 to Bmaj7: play Bmaj7 in 2nd inversion (F♯–A♯–B–D♯) and F♯ and A♯ stay under the same fingers, while C♯ moves down to B and E down to D♯. Bmaj7 on piano
- G♯m7 (vi in B major): F♯9 to G♯m7: play G♯m7 in 1st inversion (B–D♯–F♯–G♯) and G♯ stays under the same finger, while A♯ moves up to B, E down to D♯ and E up to F♯. G♯m7 on piano
F♯9 is a dominant ninth: F♯7 with the ninth on top. F♯9 is the funk and soul version of F♯7, fuller on top and still pulling toward its resolution. The one-by-one button above makes that quality easy to hear.
Practice F♯9 in two minutes
Start with a broken chord, F♯ A♯ C♯ E G♯ E C♯ A♯ F♯, then play it solid.
The keys of F♯9
F♯9 is a dominant ninth chord, 1–3–5–♭7–9 from F♯. Root position, from the bottom: how F♯9 is built.
| Note | Key | Fingers | Role |
|---|---|---|---|
| F♯ | black key | RH 1 · LH 5 | root |
| A♯ | black key | RH 2 · LH 4 | major third |
| C♯ | black key | RH 3 · LH 3 | perfect fifth |
| E | white key | RH 4 · LH 2 | minor seventh |
| G♯ | black key | RH 5 · LH 1 | ninth |
You may also see it as G♭9; nothing changes on the piano.
Where F♯9 shows up
F♯9 on guitar and ukulele
Switching instruments? Try F♯9 on ukulele or F♯9 on guitar, or compare them on the F♯9 chord page.
Related F♯ chords on piano
Other dominant ninth chords
F♯9 on piano: questions
What notes are in F♯9 on piano?
F♯, A♯, C♯, E and G♯: F♯ (black key), A♯ (black key), C♯ (black key), E (white key) and G♯ (black key). Right hand 1-2-3-4-5, left hand 5-4-3-2-1.
How do you play F♯9 on piano?
Press F♯, A♯, C♯, E and G♯ together (4 black, 1 white). Right hand: 1 on F♯, 2 on A♯, 3 on C♯, 4 on E and 5 on G♯.
What are the inversions of F♯9?
F♯9 is usually played in root position (F♯–A♯–C♯–E–G♯) or as a close voicing (F♯–G♯–A♯–C♯–E).
What does F♯9 look like on the keyboard?
black, black, black, white and black keys.
Shapes and sound are generated from the notes F♯, A♯, C♯, E and G♯ and tested automatically. Updated September 2026.