Ab 7#9 Guitar Chord | Play, Hear and Practice Interactively
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Looking for Ab7#9 (Ab seventh sharp nine)? Its five notes are Ab, C, Eb, Gb and B. The raised ninth sits a half step below the major third, so the two notes crowd each other, and that crowding is the sound.
There are three voicings listed for this root, and none of them uses an open string. Try the Ab Half-Whole scale next. It is the eight-note scale built from alternating half steps and whole steps and it contains all five chord tones, so it fits the chord from start to finish.
The fretboard at the top labels every note of each shape, so you can see where Ab, C and B fall.
Ab 7th with sharp 9th guitar chord is also written as Ab7(#9), Ab7#9 or Ab7+9. It is also known as the Hendrix chord.
Notes of the Ab 7(#9) chord:
Chord Structure:
Formula: 1 3 5 b7 #9
Ab 7(#9) Guitar Chord Diagrams
Position 1 Barre Movable
Finger Positions
- Place your index finger (1) on the fret 3 of the A string
- Place your middle finger (2) on the fret 4 of the low E string
- Place your ring finger (3) on the fret 4 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 4 of the low E, D and B 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 6 of the A string
- Place your pinky finger (4) on the fret 7 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 10 of the D string
- Place your middle finger (2) on the fret 11 of the A string
- Place your ring finger (3) on the fret 11 of the G string
- Place your pinky finger (4) on the fret 12 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
What notes are in Ab7#9?
Ab, C, Eb, Gb and B. The Gb is the minor seventh, and the plain B is the sharp ninth, a half step higher than the major ninth Bb.
Why is the sharp ninth of Ab7#9 a plain B?
A ninth higher than Ab uses the letter B. The major ninth is Bb, and raising it by a half step gives B natural. That note sounds like Cb, a minor third from the root.
Is Ab7#9 the same as G#7#9?
Yes, they sound identical. G#7#9 is spelled G#, B#, D#, F# and A##, so the Ab spelling is far easier to read.
Which scale works over the Ab seventh sharp nine chord?
The Ab Half-Whole scale: Ab, Bbb, B, C, D, Eb, F and Gb. It has eight notes alternating half and whole steps, and it contains every chord tone.
How many voicings does Ab7#9 have?
Three voicings are listed, from the third fret to the twelfth fret. Two of them are barre voicings, and none of them uses open strings.
