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Chord chart for A major add 9 / B (3rd inversion) Guitar Chord: Notes, Shapes & Bass Note | Guitar Wiz

Amaj(add9)/B guitar shapes

Popular fretboard positions with fingering suggestions

Showing 8 of 107 playable shapes

A major add 9 / B (3rd inversion) guitar chord diagram showing fretboard positions
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About the chord

A major add 9 / B (3rd inversion)

Amaj(add9)/B is the A major add 9 / B (3rd inversion) guitar chord with B in the bass. It uses the notes A, C♯, E, and B and the interval formula 1-3-5-9.

The A major add 9 major add 9 chord extends the major triad with an added ninth B, creating a bright, expansive harmony. Unlike the major 9 chord, it lacks the major seventh, offering a fresher, more open sound often used in pop, rock, and jazz for uplifting atmospheres. With B in the bass, this voicing functions as the 3rd inversion of A major add 9.

Also written as Amaj(add9), Aadd9/B, and AMadd9/B.

Root note: A
Bass note: B
Chord tones: 4
Playable shapes: 107

Chord tones

AC♯EB

Common guitar voicings

These are quick-start shapes for players who want the answer first and the deeper theory second.

Shape 1

x22220

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  1. 1 Place the 1st finger on the 2nd fret of the 2nd string, 3rd string, 4th string, and 5th string in barre position.
  2. 2 Strum from the 5th string down.

Shape 2

707655

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  1. 1 Place the 1st finger on the 5th fret of the 1st string and 2nd string in barre position.
  2. 2 Place the 2nd finger on the 6th fret of the 3rd string.
  3. 3 Place the 3rd finger on the 7th fret of the 6th string.
  4. 4 Place the 4th finger on the 7th fret of the 4th string.
  5. 5 Strum from the 6th string down.

Notes & Intervals

Each note below shows how the chord is built from its root. This is the theory layer underneath the fretboard shapes.

A Unison (Root) 1

The root anchors the chord and defines its tonal center.

C♯ Major Third 3

This note defines the chord's major quality and brings brightness to the sound.

E Perfect Fifth 5

The fifth reinforces stability and gives the chord its strong harmonic frame.

B Major Ninth 9

The ninth opens the chord up and adds a modern, spacious color.

Quick answers

What notes are in Amaj(add9)/B?

Amaj(add9)/B uses the notes A, C♯, E, and B. Its interval formula is 1-3-5-9.

What is another name for Amaj(add9)/B?

Amaj(add9)/B is also written as Amaj(add9), Aadd9/B, and AMadd9/B.

How do you play Amaj(add9)/B on guitar?

Place the 1st finger on the 2nd fret of the 2nd string, 3rd string, 4th string, and 5th string in barre position. Strum from the 5th string down.

Related Articles

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