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Guitar chords · Dominant 7th sharp 9th

G7♯9 chord on guitar (G7#9)

G7♯9 (G sharp 9th) has five notes: G, B, D, F and A♯, the , 3, 5, ♭7 and ♯9.

Shapes

How to play G7♯9

Strum a shape to hear it, or pick it one string at a time. R marks the ; the other numbers are the chord tones.

G7♯9 has no common . Play it as the E shape at 3 or the A shape at fret 10. A keeps its fingering anywhere on the neck: slide it up or down and the , on the lowest played string, names the chord.

  • E shape · fret 3

    3fr×R♭73♭7♯9GFBFA♯
  • A shape · fret 10

    9fr××R3♭7♯9GBFA♯
Name a shape you're holding: the chord finder

Notes and formula

What makes G7♯9 dominant 7th sharp 9th

A 7♯9 chord is a chord with a raised 9th on top. The ♯9 sounds like a minor 3rd against the major 3rd, a deliberate clash; the chord is known as the Hendrix chord, at home in blues, funk and rock.

  • 1Root: the note the chord is named after. Keep it.
  • 3Essential: makes the chord what it is. Never drop it.
  • 5Optional: drop it first when you run out of fingers.

The 3rd, the ♭7th and the ♯9th make G7♯9 a sharp 9th chord; you can leave out the 5th.

  1. GRroot
  2. B3essential
  3. D5optional
  4. F♭7essential
  5. A♯♯9essential
EADGBE0135791215GGGGGGGGGFA♯BDFA♯BDFA♯BDFA♯BDFA♯BDFA♯BDFA♯BDFA♯BDF
  • G, the root
  • Other chord tones

As a V chord, G7♯9 resolves to C or, more often, Cm: the V7♯9–i move.

Keys

Keys with G7♯9

G7♯9 fits no major or minor key: its ♯9 (A♯) rubs against the major 3rd on purpose. It is the sound of blues, funk and rock, played as the I chord of a blues in G or as a V chord resolving to C.

Slash chords

G7♯9 over another bass note

A keeps G7♯9 on top and puts another note in the bass: the letter after the slash is the lowest note you play.

  • G7♯9/B

    G7♯9 with its 3rd, B, in the bass.

  • G7♯9/D

    G7♯9 with its 5th, D, in the bass.

  • G7♯9/F

    G7♯9 with its ♭7th, F, in the bass.

Questions

G7♯9, in short

What notes are in the G7♯9 chord?
G7♯9 (G sharp 9th) has five notes: G, B, D, F and A♯, the , 3, 5, ♭7 and ♯9.
How do you play G7♯9 on guitar?
G7♯9 has no common . Play it as the E shape at 3 or the A shape at fret 10.
What key is G7♯9 in?
G7♯9 fits no major or minor key: its ♯9 (A♯) rubs against the major 3rd on purpose. It is the sound of blues, funk and rock, played as the I chord of a blues in G or as a V chord resolving to C.
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