Gb9b5 Guitar Chord | Play, Hear and Practice Interactively

Gb9b5, the Gb ninth flat five chord, is spelled Gb, Bb, Dbb, Fb and Ab. It is the same sound as F#9b5, and the Dbb and Fb are theoretical spellings of C and E.

Three voicings are listed, all barres, none with an open string, and the lowest sits at the 1st fret, close to the nut. Charts usually print the F# name because it needs no double flat. The Gb whole-tone scale contains all five chord tones.

Hear each shape strummed and as an arpeggio in the player above.

Gb 9th with flat 5th guitar chord is also written as Gb9b5, Gb9(b5) or Gb9-5.

Notes that compose the Gb 9b5 chord:

Gb Bb Dbb Fb Ab

Formula of the Dominant Ninth Flat five chord:

Formula: 1 3 b5 b7 9

Gb 9b5 Chord Interactive Fretboard

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Gb 9b5 Guitar Chord Diagrams

Position 1 Barre Movable

Finger Positions

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

Position 2 Barre Movable

Finger Positions

Mute the low E string
Mute the A string
Place your index finger (1) on the fret 4 of the D and high E 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 B string

Position 3 Barre Movable

Finger Positions

Place your index finger (1) on the fret 8 of the low E, D and high E strings at the same time
Place your middle finger (2) on the fret 9 of the A string
Place your ring finger (3) on the fret 9 of the G string
Place your pinky finger (4) on the fret 9 of the B string

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

Play This Chord With Other Roots

C 9b5 | D 9b5 | E 9b5 | F 9b5 | G 9b5 | A 9b5 | B 9b5 | C#9b5 | D#9b5 | F#9b5 | G#9b5 | A#9b5 | Ab9b5 | Bb9b5 | Db9b5 | Eb9b5 | Gb9b5

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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 make up Gb9b5?

Gb9b5 is Gb, Bb, Dbb, Fb and Ab. The Dbb is the lowered fifth and sounds like C, the Fb is the minor seventh and sounds like E, and the Ab is the ninth.

Is Gb9b5 the same as F#9b5?

Yes. F#9b5 is F#, A#, C, E and G#, the same five pitches. F#9b5 reads more simply, with no double flat.

Why does Gb ninth flat five contain Dbb?

The fifth over Gb takes the letter D. The perfect fifth is Db, and lowering it by a semitone gives Dbb.

How many voicings does Gb9b5 have?

There are 3 voicings, from fret 1 to fret 9. All 3 are barre voicings and none uses an open string.

Which scale suits Gb9b5?

The Gb whole-tone scale is Gb, Ab, Bb, C, D and Fb. All five chord pitches are in it, and the chord's Dbb sounds as the scale's C.