Aadd9 guitar chord
How to play Aadd9 on guitar — the notes A, C♯, E, B, a shape you can tap to hear, the keys it lives in, and a progression to hear it in context. Free.
The shape
Tap the diagram to hear Aadd9 strummed. Aadd9 is an open chord — it uses open strings near the nut, so it rings full and is friendly for beginners.
The notes in Aadd9
A added ninth chord is spelled from its root up: A (R), C♯ (3), E (5), B (9). Those are the only notes in Aadd9 — play them in any order, in any octave, and it's still Aadd9.
What a added ninth chord is
In plain terms, an add9 keeps a full major chord and adds the ninth on top (root, 3rd, 5th, 9th) — colour without changing the chord's job.
How it's used: A major chord with sparkle: it stays a I or IV but shimmers. Unlike a sus, it keeps its third, so its major/minor identity is intact.
The sound: Bright, sparkling, modern — a major chord with extra light. Where you'll hear it: Modern pop, worship, acoustic singer-songwriter, ambient rock.
Hear Aadd9 in a progression
An add9 keeps its major job but sparkles — here in a I–V move. Press play, and drag the Key control to move it anywhere.
Other A chords
added ninth chords on other roots
Chords and their spellings are shared facts of music theory. Every diagram and sound here is generated by ThunderFret's own engine — no tabs, lyrics or recordings are reproduced.
Open Aadd9 in the interactive tool to see every place it sits on the neck, hear it, and find the shape that fits your hand — free.
See Aadd9 on the fretboardFrequently asked
What notes are in Aadd9?
Aadd9 is made of 4 notes: A (the R), C♯ (the 3), E (the 5), B (the 9).
How do you play Aadd9 on guitar?
Aadd9 is an open chord — it uses open strings near the nut, so it rings full and is friendly for beginners.
When would I use Aadd9?
Modern pop, worship, acoustic singer-songwriter, ambient rock.