Ninths

G dominant 7th sharp 9 chord

The “Hendrix chord” — gritty, with major and minor 3rds clashing.

Notes
GBDFA♯
Formula
135♭7♯9
Built from
root · major 3rd · perfect 5th · minor 7th · augmented 9th

How to play G7♯9

About the G dominant 7th sharp 9 chord

Playing it

On guitar, G7♯9 has an open-position shape, 320301, using four fingers alongside the open strings.

On piano, G7♯9 has one black key (A♯) and four white keys. In root position it spans more than an octave, so many pianists play the root with the left hand and the rest with the right.

On ukulele the usual G7♯9 shape is 3212, using four fingers. It leaves out the root, which a bass player (or your ear) fills in.

Related chords

Move a single note and G7♯9 becomes a different chord: drop the A♯ for G7, drop the B for Gm7, lower A♯ to A for G9 and swap B for A for Gm9.

G7♯9 chord (G dominant 7th sharp 9) on guitar, ukulele and piano
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