guitar chord
A♭maj9
A major seventh with a ninth on top.
Written the other way round it is G♯maj9 — the same twelve keys on a piano, a different piece of notation.
Every fingering that fits a hand
41101x
hard
4353xx
hard · no 5
xx6586
hard · no 5
xbacbx
hard · no 5
What is true of it
A♭maj9 is A♭, C, E♭, G and B♭ — 1, 3, 5, 7 and 9 counted from A♭.
On an instrument that cannot reach all 5, the 5 and 1 go first, in that order.
The easiest of the 4 fingerings below is 41101x: 4 fingers, held at the 1st fret.
None of them uses an open string, so this chord moves up the neck unchanged — the same shape 1 fret higher is the chord a semitone above.
1 string stays silent.
Where its notes are on the neck
The brass dots are A♭, the root. Everything else is a chord tone with its degree printed in it.
With a different note underneath
A♭maj9/C
8b8888
A♭maj9/E♭
xx1313
A♭maj9/G
31101x
An inversion is the same chord with a different note lowest. The name changes to a slash name because the bass is what a listener hears as the foundation.