Master the G 13b9 Chord with Theory & Fretboard Training

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G 13(b9) position 3 guitar chord diagram

G13(b9) (G thirteenth flat nine) follows the formula 1, 3, 5, b7, b9, 11, 13, so on G it reads G, B, D, F, Ab, C and E.

Five voicings are listed, from fret 1 to fret 10: two use open strings and two are barre shapes. Every tone of the chord except the eleventh sits inside the G Half-Whole scale, which alternates half and whole steps.

Strum the shape in front of your microphone and the chord player at the top shows which strings ring and which are muted.

G 13th with flat 9th guitar chord is also written as G13(b9), G13b9 or G13-9.

G 13(b9) chord Notes:

G B D F Ab C E

Tones in the Dominant Thirteen Flat Nine chord:

1
b2
2
b3
3
4
b5
5
#5
6
b7
7
8
b9
9
#9
11
#11
13

G 13(B9) Guitar Chord Diagrams

Position 1 Open

G 13(b9) position 3 guitar chord diagram

Finger Positions

  • Mute the low E string
  • Mute the A string
  • Let the B string play without pressing any fret
  • Let the high E string play without pressing any fret
  • Place your index finger (1) on the fret 1 of the G string
  • Place your ring finger (3) on the fret 3 of the D string

Position 2 Barre Movable

G 13(b9) position 4 guitar chord diagram

Finger Positions

  • Mute the low E string
  • Mute the high E string
  • Place your index finger (1) on the fret 8 of the A string
  • Place your ring finger (3) on the fret 9 of the D, G and B strings at the same time

Position 3 Barre Movable

G 13(b9) position 5 guitar chord diagram

Finger Positions

  • Mute the low E string
  • Place your index finger (1) on the fret 8 of the A string
  • Place your ring finger (3) on the fret 9 of the D, G and B strings at the same time
  • Place your pinky finger (4) on the fret 10 of the high E string

Position 4 Movable

G 13(b9) position 6 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 D string
  • Place your middle finger (2) on the fret 4 of the G string
  • Place your ring finger (3) on the fret 4 of the high E string
  • Place your pinky finger (4) on the fret 5 of the B string

Position 5 Open

G 13(b9) position 7 guitar chord diagram

Finger Positions

  • Mute the A string
  • Let the B string play without pressing any fret
  • Let the high E string play without pressing any fret
  • Place your index finger (1) on the fret 1 of the G string
  • Place your ring finger (3) on the fret 3 of the low E string
  • Place your pinky finger (4) on the fret 3 of the D string

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Play This Chord With Other Roots

C 13(b9) | D 13(b9) | E 13(b9) | F 13(b9) | G 13(b9) | A 13(b9) | B 13(b9) | C#13(b9) | D#13(b9) | F#13(b9) | G#13(b9) | A#13(b9) | Ab13(b9) | Bb13(b9) | Db13(b9) | Eb13(b9) | Gb13(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

What notes spell G13(b9)?

G13(b9) is G, B, D, F, Ab, C and E. That is the root, major third, perfect fifth, minor seventh, flat ninth, eleventh and thirteenth.

How many ways are there to play G13(b9)?

G13(b9) has five valid voicings: two with open strings and two barre voicings. They range from fret 1 up to fret 10.

Which scale fits G13(b9)?

The G half-whole scale spells G, Ab, A#, B, C#, D, E and F. It contains every chord tone except the eleventh, C.

How is G13(b9) different from G13?

G13 has a natural ninth, A. G13(b9) lowers it to Ab, so the chord gains a half step against the root and sounds tenser.

What are the intervals of G13(b9)?

They are 1, 3, 5, b7, b9, 11 and 13. On G that reads G, B, D, F, Ab, C and E.