A#° chord on 6-String Guitar – All Fourths

in All Fourths (E-A-D-G-C-F) tuning · Also known as Perfect Fourths

Root

Type

Tuning

A#°

Diminished

Notes:A# · C# · E

mediumbarre on fret 1

Piano Left hand Right hand

Fingerings (16)

A#° shapes as text

Frets	Fingers	Notes	Difficulty
x 1 2 3 1 x	– 1 2 3 1 –	x A# E A# C# x	medium · barre on fret 1
6 4 2 3 x x	4 3 1 2 – –	A# C# E A# x x	hard
6 4 x 3 4 x	4 2 – 1 3 –	A# C# x A# E x	hard
6 4 8 6 4 x	2 1 4 3 1 –	A# C# A# C# E x	hard · barre on fret 4
6 7 x 6 x 5	2 4 – 3 – 1	A# E x C# x A#	hard
6 7 8 6 x x	1 2 3 1 – –	A# E A# C# x x	medium · barre on fret 6
9 7 8 9 x x	3 1 2 4 – –	C# E A# E x x	medium
x x 8 9 10 8	– – 1 2 3 1	x x A# E A# C#	medium · barre on fret 8
x x 11 9 10 11	– – 3 1 2 4	x x C# E A# E	medium
x x 11 x 10 11	– – 2 – 1 3	x x C# x A# E	easy
x 1 2 3 1 5	– 1 2 3 1 4	x A# E A# C# A#	hard · barre on fret 1
6 4 2 6 x x	3 2 1 4 – –	A# C# E C# x x	hard
x 4 x 3 4 x	– 2 – 1 3 –	x C# x A# E x	easy
6 4 x 6 4 x	3 1 – 4 2 –	A# C# x C# E x	hard
0 7 8 6 x 5	– 3 4 2 – 1	E E A# C# x A#	hard
6 7 8 6 x 8	1 2 3 1 – 4	A# E A# C# x C#	hard · barre on fret 6

Max fret: 12

Fingerings shown: 16

The A#° chord (Diminished) is built from the notes A#, C#, E. Below are playable fingerings for 6-String Guitar – All Fourths generated for your selected tuning, ordered from open-position shapes up the neck. Tap a diagram to hear it, or switch to the piano view to see the same harmony on keys.

How the A#° chord is built

Formula: 1 · ♭3 · ♭5

Degree	Semitones	Note
1	0	A#
♭3	3	C#
♭5	6	E

More A# chords

A#A#m A#7 A#+A#9 A#maj7 A#m7 A#7♯5 A#7♭5 A#6 A#m6 A#m7♭5 A#°7 A#sus2 A#sus4 A#add9 A#maj9 A#m9 A#5

Other roots

C°C#°D°D#°E°F°F#°G°G#°A°B°

See A#° in another tuning

Standard E E-A-D-G-B-E Half Step Down (Eb) D#-G#-C#-F#-A#-D#Drop D D-A-D-G-B-E Open D D-A-D-F#-A-D Open G D-G-D-G-B-D DADGAD (D Modal) D-A-D-G-A-D All Fourths E-A-D-G-C-F

What notes make up the A#° chord?

A#° is a Diminished chord built from the notes A#, C#, E.

How do I read the diagram?

Strings run left to right from the lowest to the first string; the numbers show which finger presses each fret. An ○ marks an open string, an ✕ marks a muted one.