Root on A string
no fifthx-11-10-11-12-x
A♭7♯9 is the A♭ dominant 7 sharp 9 chord. Its notes are A♭, C, E♭, G♭ and B. It is the same chord as G♯7♯9. A familiar blues-rock altered dominant. The fifth is omitted.
x-11-10-11-12-x
Numbers show frets from the low E string to the high e string; x means don't play that string.
Every A♭, C, E♭, G♭ and B on the first 12 frets. The filled dots are the root, A♭. Build your own shape from any nearby group.
Other A♭ chords
Other dominant 7 sharp 9 chords