F# Dominant 7th

F#7

Notes

F# · A# · C# · E

Intervals

  • RootF# (1P)
  • Major 3rdA# (3M)
  • Perfect 5thC# (5P)
  • Minor 7thE (7m)

Fretboard

EBGDAE357912EF#A#C#EC#EF#A#A#C#EF#EF#A#C#A#C#EF#EF#A#C#E

About

The F♯7 dominant seventh (F♯–A♯–C♯–E) is the primary tension-bearing chord in tonal harmony. Its pull toward resolution comes from the tritone between A♯ and E — these two notes want to resolve inward, landing in the V–I cadence on B. The 3rd and ♭7 are essential: they form the tritone, and they distinguish a dominant 7 from a F♯m7. The fifth can be freely omitted without weakening the harmonic function. On guitar, shell voicings (1–3–♭7) are common in jazz; full voicings appear in blues and rhythm playing. Compared to F♯Maj7, dominant 7 is harmonically active and directional — it is a chord that moves.

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