A°7 chord on 6-String Guitar – CGDGBD (Open G Low C)

in CGDGBD (Open G Low C) tuning

Root

Type

Tuning

A°7

Diminished 7

Notes:A · C · D# · F#

mediumbarre on fret 1

Piano Left hand Right hand

Fingerings (16)

A°7 shapes as text

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

Max fret: 12

Fingerings shown: 16

The A°7 chord (Diminished 7) is built from the notes A, C, D#, F#. Below are playable fingerings for 6-String Guitar – CGDGBD (Open G Low C) 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°7 chord is built

Formula: 1 · ♭3 · ♭5 · 6

Degree	Semitones	Note
1	0	A
♭3	3	C
♭5	6	D#
6	9	F#

More A chords

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

Other roots

C°7 C#°7 D°7 D#°7 E°7 F°7 F#°7 G°7 G#°7 A#°7 B°7

See A°7 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 CGDGBD (Open G Low C) C-G-D-G-B-D DADGAD (D Modal) D-A-D-G-A-D

What notes make up the A°7 chord?

A°7 is a Diminished 7 chord built from the notes A, C, D#, F#.

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.