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F♯ 7th suspended 4th chord on guitar (F♯7sus4)
Also called or written F♯7sus4, F♯ or F♯ Dominant 7th Suspended 4th
F♯ 7th suspended 4th contains F♯, B, C♯ and E. The default voicing is a full six-string barre at the 2nd fret, with the pinky stretching to the 4th fret on the G string.
How it is built
Formula 1, 4, 5, ♭7
- Root positionF♯–B–C♯–EF♯7sus42-2-2-4-2-2
- First inversionB–C♯–E–F♯F♯7sus4/B×-2-2-4-2-2
- Second inversionC♯–E–F♯–BF♯7sus4/C♯×-4-2-4-2-2
- Third inversionE–F♯–B–C♯F♯7sus4/E×-×-2-4-2-2
How do you play an F♯ 7th suspended 4th chord on guitar?
F♯ 7th suspended 4th is played at the 2nd fret as 2 2 2 4 2 2: barre your index finger across fret 2 and pinky finger on the G string at fret 4.
Full note and interval breakdown
| String | Fret | Finger | Note |
|---|---|---|---|
| 6 (E) | 2 | 1 (barre) | F♯ (1) |
| 5 (A) | 2 | 1 (barre) | B (4) |
| 4 (D) | 2 | 1 (barre) | E (♭7) |
| 3 (G) | 4 | 4 | B (4) |
| 2 (B) | 2 | 1 (barre) | C♯ (5) |
| 1 (e) | 2 | 1 (barre) | F♯ (1) |
AdvancedThe index finger must barre all six strings at the 2nd fret while the pinky reaches the 4th fret on the G string, requiring strength and stretch.
2nd fret · 2-4-2-4-2-2
F♯ 7th suspended 4th is played at the 2nd fret as 2 4 2 4 2 2: barre your index finger across fret 2, ring finger on the A string at fret 4 and pinky finger on the G string at fret 4.
Full note and interval breakdown
| String | Fret | Finger | Note |
|---|---|---|---|
| 6 (E) | 2 | 1 (barre) | F♯ (1) |
| 5 (A) | 4 | 3 | C♯ (5) |
| 4 (D) | 2 | 1 (barre) | E (♭7) |
| 3 (G) | 4 | 4 | B (4) |
| 2 (B) | 2 | 1 (barre) | C♯ (5) |
| 1 (e) | 2 | 1 (barre) | F♯ (1) |
F♯7sus4/B inversion · fret 2
F♯ 7th suspended 4th is played at the 2nd fret as × 2 2 4 2 2: barre your index finger across fret 2 and pinky finger on the G string at fret 4. The low E string stays muted.
Full note and interval breakdown
| String | Fret | Finger | Note |
|---|---|---|---|
| 6 (E) | muted | — | — |
| 5 (A) | 2 | 1 (barre) | B (4) |
| 4 (D) | 2 | 1 (barre) | E (♭7) |
| 3 (G) | 4 | 4 | B (4) |
| 2 (B) | 2 | 1 (barre) | C♯ (5) |
| 1 (e) | 2 | 1 (barre) | F♯ (1) |
F♯7sus4/B inversion · fret 7
F♯ 7th suspended 4th is played at the 7th fret as 7 7 9 9 7 9: barre your index finger across fret 7, middle finger on the D string at fret 9, ring finger on the G string at fret 9 and pinky finger on the high e string at fret 9.
Full note and interval breakdown
| String | Fret | Finger | Note |
|---|---|---|---|
| 6 (E) | 7 | 1 (barre) | B (4) |
| 5 (A) | 7 | 1 (barre) | E (♭7) |
| 4 (D) | 9 | 2 | B (4) |
| 3 (G) | 9 | 3 | E (♭7) |
| 2 (B) | 7 | 1 (barre) | F♯ (1) |
| 1 (e) | 9 | 4 | C♯ (5) |
F♯7sus4/C♯ inversion
F♯ 7th suspended 4th is played at the 2nd fret as × 4 2 4 2 2: barre your index finger across fret 2, ring finger on the A string at fret 4 and pinky finger on the G string at fret 4. The low E string stays muted.
Full note and interval breakdown
| String | Fret | Finger | Note |
|---|---|---|---|
| 6 (E) | muted | — | — |
| 5 (A) | 4 | 3 | C♯ (5) |
| 4 (D) | 2 | 1 (barre) | E (♭7) |
| 3 (G) | 4 | 4 | B (4) |
| 2 (B) | 2 | 1 (barre) | C♯ (5) |
| 1 (e) | 2 | 1 (barre) | F♯ (1) |
Why it sounds like that
F♯ 7th suspended 4th is built from the formula 1, 4, 5, ♭7. The perfect 4th between F♯ and B replaces the major 3rd, suspending the chord. Compare it to F♯ suspended 4th, which omits the minor 7th.
What goes wrong with F♯ 7th suspended 4th?
- Buzzing on the B or high E string because the barre is uneven.
- Letting the pinky flatten and touch the D or B string, muting them.
When to use it
F♯ 7th suspended 4th works as the V chord in B major, resolving to B major in a I–IV–V–I progression. It also fits F♯ minor and F♯ 5th contexts. The suspended 4th creates tension before a resolution to F♯ major.
Changing to and from F♯ 7th suspended 4th
- Move to F♯ minor by lifting the pinky and placing it on the G string at the 2nd fret, while keeping the barre at the 2nd fret.
Which voicing to use
The 2nd fret barre voicing is the default and keeps F♯ in the bass. The F♯7sus4/B inversion at the 2nd fret puts B in the bass, softening the root. Choose the root-position shape for a firm foundation.
Other F♯ chords
Common questions
How do I write F♯ 7th suspended 4th?
F♯ 7th suspended 4th is written F♯7sus4 or F#7sus4. The ASCII root is F#. It is also spelled G♭ in enharmonic notation for the same sounding root.
What mistake do players make with the F♯7sus4 barre?
The pinky often fails to press the G string at the 4th fret cleanly, causing a muted note. Keep the pinky arched and close to the fret.
How does F♯7sus4 differ from F♯ minor 7th?
F♯7sus4 replaces the minor 3rd A with the perfect 4th B. F♯ minor 7th contains A, while F♯7sus4 contains B, creating a suspended sound.