A° chord on 6-String Guitar – Open Gm

in Open Gm (D-G-D-G-A#-D) tuning

Root

Type

Tuning

A°

Diminished

Notes:A · C · D#

mediumbarre on fret 1

Piano Left hand Right hand

Fingerings (16)

A° shapes as text

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

Max fret: 12

Fingerings shown: 16

The A° chord (Diminished) is built from the notes A, C, D#. Below are playable fingerings for 6-String Guitar – Open Gm 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	D#

More A chords

A Am A7 A+A9 Amaj7 Am7 A7♯5 A7♭5 A6 Am6 Am7♭5 A°7 Asus2 Asus4 Aadd9 Amaj9 Am9 A5

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 Open Gm D-G-D-G-A#-D DADGAD (D Modal) D-A-D-G-A-D

What notes make up the A° chord?

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

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.