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The A#13 chord is A# dominant thirteenth: A#, C##, E#, G#, B#, D# and F##. It sounds identical to Bb13, which uses the simpler notes Bb, D, F, Ab, C, Eb and G, so charts usually print that name.

Three voicings are listed, one with an open string and two barres, and the lowest is at the 1st fret. Two double sharps and two other E# and B# notes make this spelling hard to read. The A# Mixolydian scale contains all seven.

Press play above to listen to the chord strummed, then arpeggiated.

A# dominant 13th guitar chord is also written as A#13, A#dom13 or A#7(13).

Notes of the A# 13 chord:

A# C## E# G# B# D# F##

Tones in the Dominant Thirteen chord:

Formula: 1 3 5 b7 9 11 13

A# 13 Guitar Chord Diagrams

Position 1 Open

Finger Positions

Mute the low E string
Let the D string play without pressing any fret
Place your index finger (1) on the fret 1 of the A string
Place your middle finger (2) on the fret 1 of the G string
Place your ring finger (3) on the fret 1 of the B string
Place your pinky finger (4) on the fret 3 of the high E string

Position 2 Barre Movable

Finger Positions

Mute the A string
Place your index finger (1) on the fret 3 of the B and high E strings at the same time
Place your middle finger (2) on the fret 5 of the G string
Place your ring finger (3) on the fret 6 of the D string
Place your pinky finger (4) on the fret 6 of the low E string

Position 3 Barre Movable

Finger Positions

Mute the A string
Place your index finger (1) on the fret 6 of the low E and D strings at the same time
Place your middle finger (2) on the fret 7 of the G string
Place your ring finger (3) on the fret 8 of the B string
Place your pinky finger (4) on the fret 8 of the high E string

Find more shapes in our all guitar chords online library. If you prefer a printable pdf, download the Free Guitar Chords Chart Pdf

Play This Chord With Other Roots

C 13 | D 13 | E 13 | F 13 | G 13 | A 13 | B 13 | C#13 | D#13 | F#13 | G#13 | A#13 | Ab13 | Bb13 | Db13 | Eb13 | Gb13

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Created by

Giancarlo Facoetti

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

FAQ

What notes does A#13 contain?

A#13 is spelled A#, C##, E#, G#, B#, D# and F##. That is seven different notes, stacked in thirds from the root up to the thirteenth, F##.

Is A#13 the same chord as Bb13?

Yes. Bb13 spells the pitches as Bb, D, F, Ab, C, Eb and G, so it avoids the double sharps and the E# and B# of A#13. The sound is the same.

Why does A# dominant thirteenth have two double sharps?

The major third and the thirteenth need the letters C and F, and the plain sharps C# and F# would fall a semitone short of the right interval. So the chord uses C## and F##, which sound like D and G.

What does the 13 in A#13 mean?

It is F##, a major sixth over A# placed an octave higher. It sounds like G and is the sixth degree of A# Mixolydian.

How many voicings does A#13 have?

There are 3 voicings, from fret 1 to fret 8. One has an open string and two are barre voicings.