A9 Guitar Chord

How to play A9: a dominant 9th built on A, with 2 voicings, the notes, and the intervals.

Chord Diagrams

X
A common voicing
X
Voicing 2

The first diagram is a common voicing: an open-position shape using 1 open string, played near the nut. An X above a string means don't play it; an O means play it open.

More Voicings of A9

The same chord in other positions on the neck: movable shapes transposed to A. Open any of them in the Diagram Maker below to adjust the fingering.

XX
Fret 4
XX
Fret 4
6XX
Fret 6
9X
Fret 9

Notes & Intervals in A9

NoteAC#EGB
IntervalR35b79

A9 is a dominant 9th with A as its root. The full theoretical spelling is A, C#, E, G, B. This voicing sounds every chord tone.

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Use This Chord

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Other dominant 9th chords

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