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A♭7♯9 Chord on Guitar

A♭7♯9 is the A♭ dominant 7♯9 (hendrix) chord — 5 notes (A♭, C, E♭, G♭, B) built from the formula 1 3 5 ♭7 ♯9. Below are playable shapes across the fretboard, the keys it belongs to and the scales to use when soloing over it.

Notes: A♭ · C · E♭ · G♭ · BFormula: 1 · 3 · 5 · ♭7 · ♯9Hear it and see it on the fretboard ▸

A♭7♯9: Chord shapes (open & barre)

  • A♭7♯9 – open positionR35R♯9♭7open position
  • A♭7♯9 – fret 1R♯95R3♭7fret 1
  • A♭7♯9 – fret 44R5♭735♯9fret 4
  • A♭7♯9 – fret 55××R3♭7♯9fret 5
  • A♭7♯9 – fret 1010×R3♭7♯9×fret 10

A♭7♯9: Shell voicings (jazz)

  • A♭7♯9 – R-3-7R3♭7×××R-3-7
  • A♭7♯9 – R-3-710×R3♭7××R-3-7
  • A♭7♯9 – R-7-3R×♭73××R-7-3
  • A♭7♯9 – R-7-311×R×♭73×R-7-3

Scales to play over A♭7♯9

Ordered from the most common choice. All of them contain A♭, C, E♭, G♭, B.

Other A♭ chords

Triads

Sevenths

Sixths

Added

Extended

Dominant 7♯9 (Hendrix) chords in other keys

FAQ

What notes are in the A♭7♯9 chord?
A♭7♯9 (A♭ dominant 7♯9 (hendrix)) contains A♭, C, E♭, G♭, B — formula 1 3 5 ♭7 ♯9.
How do you play A♭7♯9 on guitar?
A common shape is 431102 (low E to high E, x = muted string, open position). This page shows more shapes, drop 2, drop 3 and shell voicings in the interactive library.
What scale goes with A♭7♯9?
Good choices to solo over A♭7♯9: A♭ Diminished (half-whole).