Guitar · add9
Aadd9 Chord on Guitar
Aadd9 is A, C#, E, B — the 1-3-5-9 pattern of a add9 chord. There are 4 ways to play it on guitar, ranked below from easiest to hardest.
Good news: Aadd9 has an open shape on guitar, so you can play it without barring anything. Start there and work up the neck later.
Start here — Open Position
Open shape — open strings ring right through it and there is nothing to barre. If you only learn one, learn this one.
Easier ways to play it — 4 shapes, easiest first
Same chord in all of them. What changes is how much your hand has to do and where on the neck it sits.
Open Position Way 1 of 4
Open Position
Easiest here· intermediate· the standard shape
Open shape — open strings ring right through it and there is nothing to barre. If you only learn one, learn this one.
Alternative Way 2 of 4
Alternative
advanced
Open shape — open strings ring right through it and there is nothing to barre. If you only learn one, learn this one.
A Shape Barre (2nd fret) Way 3 of 4
A Shape Barre (2nd fret)
advanced
Open shape — open strings ring right through it and there is nothing to barre. If you only learn one, learn this one.
E Shape Barre (5th fret) Way 4 of 4
E Shape Barre (5th fret)
advanced
Barre at fret 5 — the same movable idea, further up the neck: brighter, more compact, and easier to reach if you are already playing up there.
What beginners get wrong
Moving in and out of it
The shape above: Open Position — open position, so several strings ring unfretted.
Listening: each shape above has its own play button, and each one plays the notes that shape actually produces — not a generic triad.
Aadd9 on other instruments
Same notes, different hands. Every link below is a real page with diagrams and audio.
Chords next door
Same root, different colour — and all of them playable on guitar.
Aadd9 on Guitar — questions people ask
What is the easiest way to play Aadd9 on guitar?
“Open Position” — which we rate intermediate — is the easiest Aadd9 shape on guitar. Open shape — open strings ring right through it and there is nothing to barre. If you only learn one, learn this one.
What notes are in the Aadd9 chord?
Aadd9 is A, C#, E, B — 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.
How many ways can you play Aadd9 on guitar?
This page has 4 Aadd9 voicings for guitar, ranked from easiest to hardest: Open Position, Alternative, A Shape Barre (2nd fret), E Shape Barre (5th fret). They all sound like Aadd9; the differences are how hard they are to hold and how high they sit.
What can I play instead of Aadd9?
The nearest stand-ins on guitar that keep the same root are Asus4, Asus2, A. 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 Aadd9 on other instruments?
Yes. Aadd9 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 Aadd9
The shape gets your fingers there. These explain why it sounds the way it does.
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
Intervals — The Only Music Theory You Actually Need
Which degree got swapped in, and what that one interval changes.
5 min read