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Guitar · add9

Aadd9 Chord on Guitar

Ab Add 9 is Ab, C, Eb, Bb — the 1-3-5-9 pattern of a add9 chord. Here is the shape, the audio, and what usually goes wrong.

There is no open Abadd9 on guitar — the single shape below is a barre, which is exactly why this chord trips people up. Take it slowly and check every string.


Start hereE Shape Barre (4th fret)

Barre at fret 4 — harder to hold than an open shape, but movable: slide it and you have every other add9 chord.

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E Shape Barre (4th fret)
Press play to hear Abadd9 the way this shape actually sounds.

What beginners get wrong

Moving in and out of it

The shape above: E Shape Barre (4th fret) — barred at fret 4.

Listening: each shape above has its own play button, and each one plays the notes that shape actually produces — not a generic triad.

Abadd9 on other instruments

Same notes, different hands. Every link below is a real page with diagrams and audio.

Piano

Aadd9 on piano

3 voicings · easiest is intermediate

Ukulele

Aadd9 on ukulele

1 voicing · easiest is intermediate

Mandolin

Aadd9 on mandolin

1 voicing · easiest is intermediate

Or see Ab Add 9 on every instrument at once.

Chords next door

Same root, different colour — and all of them playable on guitar.

A

Ab Major

Aaug

Ab Augmented

Asus2

Ab Suspended 2nd

Asus4

Ab Suspended 4th

A5

Ab Power Chord

A6

Ab Major 6th

Abadd9 on Guitar — questions people ask

What is the easiest way to play Abadd9 on guitar?

“E Shape Barre (4th fret)” — which we rate advanced — is the easiest Abadd9 shape on guitar. Barre at fret 4 — harder to hold than an open shape, but movable: slide it and you have every other add9 chord. There is no open Abadd9 on guitar, so a barre is unavoidable; this is the least demanding one.

What notes are in the Ab Add 9 chord?

Ab Add 9 is Ab, C, Eb, Bb — the 1-3-5-9 interval pattern of a add9 chord. Every voicing on this page uses those notes and nothing else; they just appear in a different order and octave.

What can I play instead of Abadd9?

The nearest stand-ins on guitar that keep the same root are Ab5, Absus4, Absus2. They keep the root and the fifth and only change what sits in the middle, so most songs still work — but check the swap against the melody, because the note you removed may be the one the tune is singing.

Can I play Abadd9 on other instruments?

Yes. Abadd9 is the same set of notes everywhere; only the fingering changes. This site has diagrams and audio for it on piano, ukulele, mandolin.

Learn the theory behind Abadd9

The shape gets your fingers there. These explain why it sounds the way it does.

Barre Chords — The Wall Every Guitarist Climbs

This one asks for a barre. The article is the fix for the buzzing and the aching hand.

7 min read

Chord Inversions and Slash Chords — Same Notes, Different Attitude

Suspending or adding a tone is a voicing decision, the same kind as an inversion or a slash chord.

5 min read

Chord Progressions Explained

These chords earn their keep inside a progression, leaning on the plain chord that follows.

7 min read

Written and checked by Jake Dahn. Every voicing on this page is re-derived from the instrument’s tuning before it is published, so the diagram and the audio always agree. No ads, no sign-up, no paywall.