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Chord chart for B augmented 7th flat 9th / A (3rd inversion) Guitar Chord: Notes, Shapes & Bass Note | Guitar Wiz

Baug7♭9/A guitar shapes

Popular fretboard positions with fingering suggestions

Showing 8 of 28 playable shapes

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B augmented 7th flat 9th / A (3rd inversion) guitar chord diagram showing fretboard positions

About the chord

B augmented 7th flat 9th / A (3rd inversion)

Baug7♭9/A is the B augmented 7th flat 9th / A (3rd inversion) guitar chord with A in the bass. It uses the notes B, D♯, F𝄪, A, and C and the interval formula 1-3-♯5-♭7-♭9.

The B augmented 7th flat 9th augmented 7th flat 9th chord blends the augmented triad with a minor seventh and flat ninth C, producing a complex, dramatic tension. Its dissonant, unresolved sound is ideal for jazz and film scoring. With A in the bass, this voicing functions as the 3rd inversion of B augmented 7th flat 9th.

Also written as Baug7♭9, B7♯5♭9/A, B+7♭9/A, and B7+5♭9/A.

Root note: B
Bass note: A
Chord tones: 5
Playable shapes: 28

Chord tones

BD♯F𝄪AC

Common guitar voicings

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

Shape 535443

535443

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

Shape 565507

565507

View shape
  1. 1 Place the 1st finger on the 5th fret of the 3rd string, 4th string, and 6th string in barre position.
  2. 2 Place the 2nd finger on the 6th fret of the 5th string.
  3. 3 Place the 3rd finger on the 7th fret of the 1st string.
  4. 4 Let the second string ring open.
  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.

B Unison (Root) 1

The root anchors the chord and defines its tonal center.

D♯ Major Third 3

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

F𝄪 Augmented Fifth ♯5

The raised fifth adds lift, drama, and a more unsettled color.

A Minor Seventh ♭7

The minor seventh adds bluesy or jazzy tension that wants to move onward.

C Minor Ninth ♭9

The flat ninth adds sharper tension and a more dramatic clash.

Shape details

Every shape is shown with its diagram and exact fingering instructions.

Baug7♭9/A shape 535443

How to play this shape

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

Baug7♭9/A shape 565507

How to play this shape

  1. 1 Place the 1st finger on the 5th fret of the 3rd string, 4th string, and 6th string in barre position
  2. 2 Place the 2nd finger on the 6th fret of the 5th string
  3. 3 Place the 3rd finger on the 7th fret of the 1st string
  4. 4 Let the second string ring open
  5. 5 Strum from the sixth string down to the first string

Baug7♭9/A shape x09888

How to play this shape

  1. 1 Place the 1st finger on the 8th fret of the 1st string, 2nd string, and 3rd string in barre position
  2. 2 Place the 2nd finger on the 9th fret of the 4th string
  3. 3 Let the fifth string ring open
  4. 4 Do not play the sixth string
  5. 5 Strum from the fifth string down to the first string

Baug7♭9/A shape x0a00b

How to play this shape

  1. 1 Place the 1st finger on the 10th fret of the 4th string
  2. 2 Place the 2nd finger on the 11th fret of the 1st string
  3. 3 Let the fifth, third, and second strings ring open
  4. 4 Do not play the sixth string
  5. 5 Strum from the fifth string down to the first string

Baug7♭9/A shape xca00b

How to play this shape

  1. 1 Place the 1st finger on the 10th fret of the 4th string
  2. 2 Place the 2nd finger on the 11th fret of the 1st string
  3. 3 Place the 3rd finger on the 12th fret of the 5th string
  4. 4 Let the third and second strings ring open
  5. 5 Do not play the sixth string
  6. 6 Strum from the fifth string down to the first string

Baug7♭9/A shape x0ac0b

How to play this shape

  1. 1 Place the 1st finger on the 10th fret of the 4th string
  2. 2 Place the 2nd finger on the 11th fret of the 1st string
  3. 3 Place the 3rd finger on the 12th fret of the 3rd string
  4. 4 Let the fifth and second strings ring open
  5. 5 Do not play the sixth string
  6. 6 Strum from the fifth string down to the first string

Baug7♭9/A shape xcac0b

How to play this shape

  1. 1 Place the 1st finger on the 10th fret of the 4th string
  2. 2 Place the 2nd finger on the 11th fret of the 1st string
  3. 3 Place the 3rd finger on the 12th fret of the 5th string
  4. 4 Place the 4th finger on the 12th fret of the 3rd string
  5. 5 Let the second string ring open
  6. 6 Do not play the sixth string
  7. 7 Strum from the fifth string down to the first string

Baug7♭9/A shape x0a0cb

How to play this shape

  1. 1 Place the 1st finger on the 10th fret of the 4th string
  2. 2 Place the 2nd finger on the 11th fret of the 1st string
  3. 3 Place the 3rd finger on the 12th fret of the 2nd string
  4. 4 Let the fifth and third strings ring open
  5. 5 Do not play the sixth string
  6. 6 Strum from the fifth string down to the first string

Quick answers

What notes are in Baug7♭9/A?

Baug7♭9/A uses the notes B, D♯, F𝄪, A, and C. Its interval formula is 1-3-♯5-♭7-♭9.

What is another name for Baug7♭9/A?

Baug7♭9/A is also written as Baug7♭9, B7♯5♭9/A, B+7♭9/A, and B7+5♭9/A.

How do you play Baug7♭9/A on guitar?

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

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