Understand and Play the G7(#9) Guitar Chord with Our Tool
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G7#9 (G seventh sharp nine) is G7 with a raised ninth added: G, B, D, F and A#. The A# is enharmonic with Bb, a minor third above G, and the chord is often called the Hendrix chord.
Between fret 2 and fret 11, this page holds three voicings, and none of them uses an open string. Every tone of G7#9 sits inside the G Half-Whole scale, the eight-note scale built from alternating half steps and whole steps, so it is a natural pool of notes for lines over the chord. Moving into it from a simpler chord is quicker with smoother chord changes.
Pick a tempo for the drum loop in the tool at the top of the page and repeat the chord in time.
G 7th with sharp 9th guitar chord is also written as G7(#9), G7#9 or G7+9. It is also known as the Hendrix chord.
G 7(#9) chord Notes:
Formula of the Dominant Seventh Sharp Ninth Added chord:
Formula: 1 3 5 b7 #9
G 7(#9) Guitar Chord Diagrams
Position 1 Barre Movable
Finger Positions
- Place your index finger (1) on the fret 2 of the A string
- Place your middle finger (2) on the fret 3 of the low E string
- Place your ring finger (3) on the fret 3 of the D, G, B and high E strings at the same time
Position 2 Barre Movable
Finger Positions
- Place your index finger (1) on the fret 3 of the low E, D and B strings at the same time
- Place your middle finger (2) on the fret 4 of the G string
- Place your ring finger (3) on the fret 5 of the A string
- Place your pinky finger (4) on the fret 6 of the high E string
Position 3 Movable
Finger Positions
- Mute the low E string
- Mute the high E string
- Place your index finger (1) on the fret 9 of the D string
- Place your middle finger (2) on the fret 10 of the A string
- Place your ring finger (3) on the fret 10 of the G string
- Place your pinky finger (4) on the fret 11 of the B string
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Created by
Giancarlo is a musician (teaching guitar since 2000), software engineer, AI consultant and published researcher
FAQ
Which notes are in G7#9?
G, B, D, F and A#. The first four form a G seventh chord, and A# is the sharp ninth, which sounds like Bb.
Why is the sharp ninth of G7#9 written A# and not Bb?
The ninth of G uses the letter A, and raising it by a half step gives A#. Bb would sound the same but would name a minor third, not a ninth.
What scale can I play over G7#9?
The G Half-Whole scale, spelled G, Ab, A#, B, C#, D, E and F, contains all five chord tones. Its eight notes alternate half steps and whole steps.
How many voicings are listed for G7#9?
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.
How does G7#9 differ from G7?
G7 contains G, B, D and F. G7#9 keeps those notes and adds A#, the sharp ninth. It sounds like Bb, which sits beside the major third B and makes the chord tense.
