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G♭7♭9 Chord: Guitar, Piano and Notes

The G♭7♭9 chord is a altered dominant seventh chord built on the root note G♭. Its notes are G♭, B♭, D♭, F♭ and A𝄫. It's enharmonically the same chord as F♯7♭9.

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Quality
Short answer

Dominant seventh flat nine chords sound dark and urgent. Stacking a minor ninth on a dominant seventh tightens the tension already built into the tritone, which makes the chord a strong pull toward a minor tonic.

Notes
G♭ · B♭ · D♭ · F♭ · A𝄫
Formula
1 · 3 · 5 · ♭7 · ♭9
Semitones
0 · 4 · 7 · 10 · 13
Note
G♭
Quality
Dominant 7♭9
Symbol
G♭7♭9

G♭7♭9 on piano

5 notes
View:
Piano diagram of the G♭7♭9 chord

Switch to the interactive diagram to hear the chord, change voicing and swap finger numbers for note names.

To play G♭7♭9 on piano, place your right hand with your thumb on G♭, index finger on B♭, middle finger on D♭, ring finger on F♭ and little finger on A𝄫. Press the keys together and listen for an even sound. On the keyboard G♭, B♭ and D♭ are black keys and F♭ and A𝄫 are white, the keys you'd normally call E and G. The thumb starts on a black key, so slide the whole hand a little further in, towards the fallboard. Practice moving in and out of the chord slowly, then bring in a metronome.

  • G♭1
  • B♭3
  • D♭5
  • F♭♭7
  • A𝄫♭9

G♭7♭9 on guitar

View:
Guitar chord diagram of the G♭7♭9 chord

Switch to the interactive diagram to hear the chord, change voicing and swap finger numbers for note names.

On guitar, G♭7♭9 is commonly played with the voicing shown above. The fretted notes sit between frets 1 and 2. Strings 3 and 1 ring open.

G♭ · B♭ · D♭ · F♭ · A𝄫

Play G♭7♭9 on the online piano

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G♭7♭9 chord notes

Also known as F♯7♭9

DegreeIntervalSemitonesNoteHear
1Root0G♭(Gb)
3Major third4B♭(Bb)
5Perfect fifth7D♭(Db)
♭7Minor seventh10F♭(Fb)
♭9Minor ninth13A𝄫(Abb)

How to use the G♭7♭9 chord

The G♭7♭9 chord is built from a root, a major third, a perfect fifth, a minor seventh and a minor ninth. Start at the root G♭ and stack the intervals to get the whole chord: G♭, B♭, D♭, F♭ and A𝄫. The same formula gives you the chord in any other key.

Dominant seventh flat nine chords are the classic altered dominant of bebop and gospel, most often the V7 of a ii-V-i in a minor key. Gospel piano voices this chord thick under the vocal line right before it resolves.

How G♭7♭9 differs from similar chords

G♭7♭9 is G♭7 with a minor ninth, a half step above the root, where G♭9 has a major ninth. Leave out the root and the other four notes form a diminished seventh chord a major third up. That is why it pulls so hard towards a minor chord a fifth below.

Where G♭7♭9 is used

A dominant chord wants to resolve. Its home is the V of a major key - and the I of a blues, where the pull never lets up.

As the VC♭ major
  1. ii7D♭m7
  2. V7♭9G♭7♭9
  3. Imaj7C♭maj7

G♭7♭9 is the chord that wants to resolve, so ending the loop on it hands straight back to the top.

Questions people ask

What notes are in the G♭7♭9 chord?
The G♭7♭9 chord contains G♭, B♭, D♭, F♭ and A𝄫 (Gb, Bb, Db, Fb and Abb in plain text).
Is the G♭7♭9 chord major or minor?
G♭7♭9 is a altered dominant seventh chord. Dominant seventh flat nine chords sound dark and urgent. Stacking a minor ninth on a dominant seventh tightens the tension already built into the tritone, which makes the chord a strong pull toward a minor tonic.
How do you play G♭7♭9 on piano?
Place your fingers on G♭, B♭, D♭, F♭ and A𝄫 and play them together. The root usually goes to the little finger of the left hand, the upper notes to the right. On the keyboard G♭, B♭ and D♭ are black keys and F♭ and A𝄫 are white, the keys you'd normally call E and G. The thumb starts on a black key, so slide the whole hand a little further in, towards the fallboard.
How do you play G♭7♭9 on guitar?
Use the fingering in the diagram above. The fretted notes sit between frets 1 and 2. Strings 3 and 1 ring open.
What is another name for the G♭7♭9 chord?
G♭7♭9 is enharmonically equivalent to F♯7♭9. Both chord names describe exactly the same notes, but the spelling depends on the key you are playing in.