G dominant 7th sharp 9 · Piano
G7♯9 Chord on Piano
The G7♯9 chord (G dominant 7th sharp 9) is built from the notes G, B, D, F and A#. The keyboard diagram below shows exactly which keys to press.
Chord diagrams
Notes in this chord
- G
- B
- D
- F
- A♯
Degrees: 1 – 3 – 5 – ♭7 – ♯9
How to play
To play G7♯9 on piano, press G, B, D, F and A# 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
Often called the Hendrix chord, the 7♯9 stacks a sharpened ninth over a dominant seventh. Major and minor thirds sound at once, producing the gritty clash that defines psychedelic rock and funk. On G7♯9 this structure sits on the root G, so the degrees 1 – 3 – 5 – ♭7 – ♯9 map onto G, B, D, F and A#.
Frequently asked questions
- Which notes are in the G7♯9 chord?
- G7♯9 contains the notes G, B, D, F and A#. Relative to the root these are the degrees 1 – 3 – 5 – ♭7 – ♯9.
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