G# 7(b9) Guitar Chord | Play, Hear and Practice Interactively

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G# 7(b9) position 1 guitar chord diagram

Five notes make up G#7(b9) (G# seventh flat nine): G#, B#, D#, F# and A, which are a root, a major third, a perfect fifth, a minor seventh and a flat ninth.

Out of three voicings on this page, two of them are barre shapes and none of them uses an open string. Ab7(b9) is its enharmonic twin, with the same pitches and different note names. Every tone of G#7(b9) sits inside the G# Phrygian Dominant scale, the fifth mode of the harmonic minor scale, so it is a natural pool of notes for lines over the chord.

The fretboard at the top labels every note of each shape, so you can see where G#, B# and A fall.

G# 7th with flat 9th guitar chord is also written as G#7(b9), G#7b9 or G#7-9.

Notes of the G# 7(b9) chord:

G# B# D# F# A

Tones of the Dominant Seventh Flat Nine Added chord:

Formula: 1 3 5 b7 b9

G# 7(B9) Guitar Chord Diagrams

Position 1 Movable

G# 7(b9) position 1 guitar chord diagram

Finger Positions

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

Position 2 Barre Movable

G# 7(b9) position 2 guitar chord diagram

Finger Positions

  • Mute the A string
  • Place your index finger (1) on the fret 4 of the low E, D and B strings at the same time
  • Place your middle finger (2) on the fret 5 of the G string
  • Place your ring finger (3) on the fret 5 of the high E string

Position 3 Barre Movable

G# 7(b9) 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 and B strings at the same time
  • 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

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Play This Chord With Other Roots

C 7(b9) | D 7(b9) | E 7(b9) | F 7(b9) | G 7(b9) | A 7(b9) | B 7(b9) | C#7(b9) | D#7(b9) | F#7(b9) | G#7(b9) | A#7(b9) | Ab7(b9) | Bb7(b9) | Db7(b9) | Eb7(b9) | Gb7(b9)

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

How do you spell the G# seventh flat nine chord?

G#, B#, D#, F# and A. The B# is the major third and sounds like C. The A is the flat ninth, a half step higher than G# one octave up.

Is G#7(b9) just another name for Ab7(b9)?

Yes, the two chords share the same pitches. Ab7(b9) is spelled Ab, C, Eb, Gb and Bbb, so G#7(b9) is the easier one to read, with only one awkward note, B#.

Why is there a B# in G#7(b9)?

Chord letters stack as G, B, D, F, A. The major third higher than G# is B#, which sounds like C. Writing C instead would turn the third into a diminished fourth.

Which scale fits G#7(b9)?

The G# Phrygian Dominant scale: G#, A, B#, C#, D#, E and F#. It covers all five chord tones and is the fifth mode of harmonic minor.

How many voicings can I find for G#7(b9)?

Three voicings are listed, from the second fret to the eleventh fret. Two of them are barre voicings, and none of them uses open strings.