A7(b13) Guitar Chord | Play, Hear and Practice Interactively

A 7(b13) position 1 guitar chord diagram

The A7(b13) chord, also read as A seventh flat thirteen, is spelled A, C#, E, G and F: a root, a major third, a perfect fifth, a minor seventh and a flat thirteenth. The flat thirteenth sits only a half step above the natural fifth E, so those two notes crowd each other.

The single voicing here runs from fret 1 to fret 2, and it is not a barre shape. The A Mixolydian b6 scale, the fifth mode of the melodic minor scale, lines up with A7(b13), because it contains all five chord tones. Moving into it from a simpler chord is quicker with smoother chord changes.

The fretboard at the top labels every note of each shape, so you can see where A, C# and F fall.

A 7th with flat 13th guitar chord is also written as A7(b13), A7b13 or A7-13.

A7(b13) Chord Notes and Formula

Notes in the A 7(b13) chord:

A C# E G F

Chord structure of the Dominant Seventh Flat Thirteen Added chord:

Formula: 1 3 5 b7 b13

A7(b13) Chord Interactive Fretboard

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A7(b13) Guitar Chord Diagrams

Position 1 Open

A 7(b13) position 1 guitar chord diagram

Finger Positions

  • Mute the low E string
  • Let the A string play without pressing any fret
  • Let the G string play without pressing any fret
  • Place your index finger (1) on the fret 1 of the high E string
  • Place your middle finger (2) on the fret 2 of the D string
  • Place your ring finger (3) on the fret 2 of the B string

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Chords That Go With A7(b13)

One key where A7(b13) fits is D major, where it works as the V chord, an altered chord whose F is borrowed from outside the key. These are the main chords of that key, the ones you will often hear around it:

I · D ii · Em iii · F#m IV · G V · A vi · Bm

See every key in the guitar keys chart, or build a progression with these chords in the chord progression generator.

More A Chords

A Am A7 Am7 Amaj7 Asus4 Asus2 Aadd9 Adim A9 A7(b9) A7(#11) A7#5 A7#9

Want to know how this chord is built? Read dominant chords explained, or browse all A guitar chords.

Play This Chord With Other Roots

C 7(b13) | D 7(b13) | E 7(b13) | F 7(b13) | G 7(b13) | A 7(b13) | B 7(b13) | C#7(b13) | D#7(b13) | F#7(b13) | G#7(b13) | A#7(b13) | Ab7(b13) | Bb7(b13) | Db7(b13) | Eb7(b13) | Gb7(b13)

Giancarlo Facoetti, founder of FaChords Guitar

Created by

Giancarlo Facoetti

Giancarlo is a musician (teaching guitar since 2000), software engineer, AI consultant and published researcher

FAQ

What notes are in A7(b13)?

A, C#, E, G and F. The first four make an A seventh chord, and F is the flat thirteenth. It sits a half step higher than the fifth, E.

How many voicings are listed for A7(b13)?

One voicing is listed, spanning the first fret to the second fret. It uses open strings, and none of the listed voicings is a barre voicing.

Which scale fits the A seventh flat thirteen chord?

The A Mixolydian b6 scale, spelled A, B, C#, D, E, F and G, contains all five chord tones. It is the fifth mode of D melodic minor.

What does the F do in A7(b13)?

F is the flat thirteenth, a minor sixth from A one octave up. Its pitch matches a raised fifth, E#, although the chord keeps the natural fifth E, so the two notes sit a half step apart.

Where does A7(b13) tend to resolve?

A dominant seventh tends to resolve up a fourth, so A7(b13) leads to D. The flat thirteenth suits a resolution to D minor.