A° chord on 6-String Guitar – Open C
in Open C (C-G-C-G-C-E) tuning
A°
Diminished
Notes:A · C · D#
Piano Left hand Right hand
Fingerings (16)
A° shapes as text
| Shape | Frets | Fingers | Notes | Difficulty |
|---|---|---|---|---|
| x 2 3 2 0 x | – 1 2 1 – – | x A D# A C x | easy · barre on fret 2 | |
| x 2 3 5 3 x | – 1 2 4 3 – | x A D# C D# x | medium | |
| 3 5 3 5 3 5 | 1 2 1 3 1 4 | D# C D# C D# A | medium · barre on fret 3 | |
| 9 8 0 5 9 5 | 3 2 – 1 4 1 | A D# C C A A | hard · barre on fret 5 | |
| 9 8 9 8 9 8 | 2 1 3 1 4 1 | A D# A D# A C | medium · barre on fret 8 | |
| x x 9 x 0 11 | – – 1 – – 2 | x x A x C D# | hard | |
| x 2 0 2 3 x | – 1 – 2 3 – | x A C A D# x | easy | |
| x 2 3 5 x x | – 1 2 3 – – | x A D# C x x | medium | |
| x 5 3 5 3 5 | – 2 1 3 1 4 | x C D# C D# A | medium · barre on fret 3 | |
| 9 5 0 8 0 5 | 4 1 – 3 – 2 | A C C D# C A | hard | |
| 9 8 9 8 0 x | 2 1 3 1 – – | A D# A D# C x | easy · barre on fret 8 | |
| x x 9 x 12 11 | – – 1 – 3 2 | x x A x C D# | hard | |
| x 2 3 2 0 5 | – 1 2 1 – 3 | x A D# A C A | medium · barre on fret 2 | |
| x 2 x 5 3 5 | – 1 – 3 2 4 | x A x C D# A | hard | |
| x x 3 5 3 5 | – – 1 2 1 3 | x x D# C D# A | medium · barre on fret 3 | |
| 9 5 0 8 0 8 | 4 1 – 2 – 3 | A C C D# C C | hard |
The A° chord (Diminished) is built from the notes A, C, D#. Below are playable fingerings for 6-String Guitar – Open 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° chord is built
Formula: 1 · ♭3 · ♭5
| Degree | Semitones | Note |
|---|---|---|
| 1 | 0 | A |
| ♭3 | 3 | C |
| ♭5 | 6 | D# |
More A chords
Other roots
See A° in another tuning
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.