G# dominant 7th flat 5 · Piano
G#7♭5 Chord on Piano
The G#7♭5 chord (G# dominant 7th flat 5) is built from the notes G#, C, D and F#. The keyboard diagram below shows exactly which keys to press. The same chord is also written Ab7♭5; both spellings sound identical.
Chord diagrams
Notes in this chord
- G♯
- C
- D
- F♯
Degrees: 1 – 3 – ♭5 – ♭7
Also written: Ab7♭5
How to play
To play G#7♭5 on piano, press G#, C, D and F# together. In root position the lowest note is G#, 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 G#7♭5 this structure sits on the root G#, so the degrees 1 – 3 – ♭5 – ♭7 map onto G#, C, D and F#.
Frequently asked questions
- Which notes are in the G#7♭5 chord?
- G#7♭5 contains the notes G#, C, D and F#. Relative to the root these are the degrees 1 – 3 – ♭5 – ♭7.
- Are G#7♭5 and Ab7♭5 the same chord?
- Yes. G#7♭5 and Ab7♭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 G#7♭5 on your phone
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