F# dominant 7th flat 5 · Piano
F#7♭5 Chord on Piano
The F#7♭5 chord (F# dominant 7th flat 5) is built from the notes F#, A#, C and E. The keyboard diagram below shows exactly which keys to press. The same chord is also written Gb7♭5; both spellings sound identical.
Chord diagrams
Notes in this chord
- F♯
- A♯
- C
- E
Degrees: 1 – 3 – ♭5 – ♭7
Also written: Gb7♭5
How to play
To play F#7♭5 on piano, press F#, A#, C and E together. In root position the lowest note is F#, and the finger numbers follow the keys left to right in the diagram.
Theory behind the chord
The 7♭5 chord lowers the fifth of a dominant seventh, thinning out the chord and sharpening its tension. It shows up in jazz and in altered dominant sounds heading towards a resolution. On F#7♭5 this structure sits on the root F#, so the degrees 1 – 3 – ♭5 – ♭7 map onto F#, A#, C and E.
Frequently asked questions
- Which notes are in the F#7♭5 chord?
- F#7♭5 contains the notes F#, A#, C and E. Relative to the root these are the degrees 1 – 3 – ♭5 – ♭7.
- Are F#7♭5 and Gb7♭5 the same chord?
- Yes. F#7♭5 and Gb7♭5 are enharmonically identical — the spelling differs but the frets and keys are the same. Which name is used depends on the key of the piece.
Practise F#7♭5 on your phone
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