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

Baug7/A guitar shapes

Popular fretboard positions with fingering suggestions

Showing 8 of 112 playable shapes

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

About the chord

B augmented 7th / A (3rd inversion)

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

The B augmented 7th augmented 7th chord combines the augmented triad with a minor seventh A, creating a powerful, dissonant tension. Its bold, unresolved sound is frequently used in jazz, blues, and film scores for dramatic impact. With A in the bass, this voicing functions as the 3rd inversion of B augmented 7th.

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

Root note: B
Bass note: A
Chord tones: 4
Playable shapes: 112

Chord tones

BD♯F𝄪A

Common guitar voicings

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

Shape x01003

x01003

View shape
  1. 1 Place the 1st finger on the 1st fret of the 4th string.
  2. 2 Place the 3rd finger on the 3rd fret of the 1st string.
  3. 3 Let the fifth, third, and second strings ring open.
  4. 4 Strum from the 5th string down.

Shape x01203

x01203

View shape
  1. 1 Place the 1st finger on the 1st fret of the 4th string.
  2. 2 Place the 2nd finger on the 2nd fret of the 3rd string.
  3. 3 Place the 3rd finger on the 3rd fret of the 1st string.
  4. 4 Let the fifth and second strings ring open.
  5. 5 Strum from the 5th 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.

Shape details

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

Baug7/A shape x01003

How to play this shape

  1. 1 Place the 1st finger on the 1st fret of the 4th string
  2. 2 Place the 3rd finger on the 3rd 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/A shape x01203

How to play this shape

  1. 1 Place the 1st finger on the 1st fret of the 4th string
  2. 2 Place the 2nd finger on the 2nd fret of the 3rd string
  3. 3 Place the 3rd finger on the 3rd fret of the 1st 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/A shape x05443

How to play this shape

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

Baug7/A shape 505443

How to play this shape

  1. 1 Place the 1st finger on the 3rd fret of the 1st string
  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 Let the fifth string ring open
  6. 6 Strum from the sixth string down to the first string

Baug7/A shape 505445

How to play this shape

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

Baug7/A shape 565005

How to play this shape

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

Baug7/A shape 567005

How to play this shape

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

Baug7/A shape 565007

How to play this shape

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

Quick answers

What notes are in Baug7/A?

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

What is another name for Baug7/A?

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

How do you play Baug7/A on guitar?

Place the 1st finger on the 1st fret of the 4th string. Place the 3rd finger on the 3rd fret of the 1st string. Let the fifth, third, and second strings ring open. Strum from the 5th string down.

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