Master the G 13b9 Chord with Theory & Fretboard Training

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.

G13(b9) Chord Notes and Formula

G 13(b9) chord Notes:

G B D F Ab C E

Tones in the Dominant Thirteen Flat Nine chord:

Formula: 1 3 5 b7 b9 11 13

G13(b9) Chord Interactive Fretboard

Want a structured chord roadmap instead of jumping between pages?
Go to the full guitar chords tutorial.

G13(b9) Guitar Chord Diagrams

Position 1 Open

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

Find more shapes in our all guitar chords online library. If you prefer a printable pdf, download the Free Guitar Chords Chart Pdf

Chords That Go With G13(b9)

One key where G13(b9) fits is C major, where it works as the V chord, an altered chord whose Ab is borrowed from outside the key. These are the main chords of that key, the ones you will often hear around it:

I · C ii · Dm iii · Em IV · F V · G vi · Am

See every key in the guitar keys chart, or build a progression with these chords in the chord progression generator.

More G Chords

G Gm G7 Gm7 Gmaj7 Gsus4 Gsus2 Gadd9 Gdim G9 G13(#11) G13#5 G13(#9) G6/9

Want to know how this chord is built? Read dominant chords explained, or browse all G guitar chords.

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)

Want to Learn Everything About Chords?

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In the ebook you can also find maps show you the tones in a chord all along the fretboard. They are incredibly helpful because allow you to:

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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.