What notes are in an F♯7 chord?

F♯7 contains four notes: F♯ (root), A♯ (major third), C♯ (perfect fifth), and E (minor seventh).

Is F♯7 the same as G♭7?

Yes, enharmonically — same four pitches. F♯7 (three sharps + natural) lives in B-major contexts; G♭7 (six flats + natural) lives in flat-side music.

How does F♯7 resolve?

F♯7 → Bmaj7 is the V → I cadence in B major. F♯7 → Bm is the V → i cadence in B minor. Both use the same dominant chord; the resolution differs only in the third of the tonic chord.

When is F♯7 a tritone substitute?

F♯7 can substitute for C7 in cadences to F major (since C7 and F♯7 share the same tritone — E to B♭ / E to A♯). The substitution creates chromatic bass motion from F♯ down to F.

F# dominant 7 chord — notes, intervals, and practice

F♯ dominant 7 (F♯7) — F♯, A♯, C♯, E — is F♯ major with a minor 7th. The chord is the V7 of B major and the V7 of B minor. Three sharps plus the natural E (the chord's 7th); the E is what gives F♯7 its "needs to resolve" character. The chord is enharmonic to G♭7 in flat-side notation.

Intervals

The F# dominant 7 chord stacks two thirds on the root. Each interval and its size in semitones:

F#→A#major 3rd4 semitones
A#→C#minor 3rd3 semitones
C#→Eminor 3rd3 semitones

On the keyboard

Each note of the F# dominant 7 chord highlighted on a piano. Pitch class is what matters — any octave works.

On the guitar

One voicing of the F# dominant 7 chord on a six-string guitar fretboard.

1F#
3A#
5C#
♭7E

Common mistakes

F♯7's 7th is E natural — a half-step lower than F♯maj7 (which has E♯). The natural E inside a sharp-key context is the chord's identity. Replacing E with E♯ produces F♯maj7 (a stable tonic). On guitar, F♯7 is most often a 2nd-fret E-shape barre.

In context

F♯7 is the V7 of B major (F♯7 → Bmaj7 is the cadence in every B-major jazz tune) and the V7 of B minor. In ii–V–i in B minor, the progression runs C♯m7♭5 → F♯7 → Bm. The chord is also a common tritone substitute for C7 in C-major reharmonisations.

Drill it

The F# dominant 7 chord is one of 48 in the Chord Trainer. Open the full trainer to practice it alongside related chords with timing and best-time tracking.

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Frequently asked

What notes are in an F♯7 chord?: F♯7 contains four notes: F♯ (root), A♯ (major third), C♯ (perfect fifth), and E (minor seventh).
Is F♯7 the same as G♭7?: Yes, enharmonically — same four pitches. F♯7 (three sharps + natural) lives in B-major contexts; G♭7 (six flats + natural) lives in flat-side music.
How does F♯7 resolve?: F♯7 → Bmaj7 is the V → I cadence in B major. F♯7 → Bm is the V → i cadence in B minor. Both use the same dominant chord; the resolution differs only in the third of the tonic chord.
When is F♯7 a tritone substitute?: F♯7 can substitute for C7 in cadences to F major (since C7 and F♯7 share the same tritone — E to B♭ / E to A♯). The substitution creates chromatic bass motion from F♯ down to F.