G#9 Guitar Chord | Play, Hear and Practice Interactively

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G# 9 position 1 guitar chord diagram

The G#9 chord (G# dominant ninth) is spelled G#, B#, D#, F# and A#. Its sound is identical to Ab9, which swaps the B# for a plain C and is more common in flat keys.

Three voicings are listed. They begin at the 3rd fret and use neither barres nor open strings, so every note is fretted. The G# Mixolydian scale contains the five notes, and the B# in it is the same pitch as C.

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G# dominant 9th guitar chord is also written as G#9, G#dom9, G#7(9) or G#7add9.

Notes of the G# 9 chord:

G# B# D# F# A#

How to create the Dominant Ninth chord:

Formula: 1 3 5 b7 9

G# 9 Guitar Chord Diagrams

Position 1 Movable

G# 9 position 1 guitar chord diagram

Finger Positions

  • Mute the low E string
  • Mute the high E string
  • Place your index finger (1) on the fret 3 of the A string
  • Place your middle finger (2) on the fret 3 of the G string
  • Place your ring finger (3) on the fret 4 of the D string
  • Place your pinky finger (4) on the fret 4 of the B string

Position 2 Movable

G# 9 position 2 guitar chord diagram

Finger Positions

  • Mute the low E string
  • Mute the A string
  • Place your index finger (1) on the fret 3 of the G string
  • Place your middle finger (2) on the fret 4 of the D string
  • Place your ring finger (3) on the fret 4 of the B string
  • Place your pinky finger (4) on the fret 4 of the high E string

Position 3 Movable

G# 9 position 3 guitar chord diagram

Finger Positions

  • Mute the low E string
  • Mute the high E string
  • Place your index finger (1) on the fret 10 of the D string
  • Place your middle finger (2) on the fret 11 of the A string
  • Place your ring finger (3) on the fret 11 of the G string
  • Place your pinky finger (4) on the fret 11 of the B string

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Play This Chord With Other Roots

C 9 | D 9 | E 9 | F 9 | G 9 | A 9 | B 9 | C#9 | D#9 | F#9 | G#9 | A#9 | Ab9 | Bb9 | Db9 | Eb9 | Gb9

Giancarlo Facoetti, founder of FaChords Guitar

Created by

Giancarlo Facoetti

Giancarlo is a musician (teaching guitar since 2000), software engineer, AI consultant and published researcher

FAQ

Why is the third in G#9 written B# and not C?

Spelling by thirds uses the letters G, B, D, F, A. A major third over G# therefore takes the letter B, giving B#, which sounds identical to C.

What notes make up G# dominant ninth?

G#9 contains G#, B#, D#, F# and A#. The A# is the major ninth over the root and F# is the minor seventh.

Is G#9 the same chord as Ab9?

They sound the same. Ab9 is Ab, C, Eb, Gb and Bb, so it avoids the B# of G#9 and is simpler to read.

How many voicings does G#9 have?

There are 3 voicings, between fret 3 and fret 11. None of them uses an open string and none is a barre voicing.

Which scale would I play over G#9?

G# Mixolydian is G#, A#, B#, C#, D#, E# and F#. It contains all five notes of the chord, and the A# is the ninth.