A° chord on 6-String Guitar – All Fourths
in All Fourths (E-A-D-G-C-F) tuning · Also known as Perfect Fourths
A°
Diminished
Notes:A · C · D#
Piano Left hand Right hand
Fingerings (16)
A° shapes as text
| Shape | Frets | Fingers | Notes | Difficulty |
|---|---|---|---|---|
| x 0 1 2 0 x | – – 1 2 – – | x A D# A C x | easy | |
| 5 3 x 2 3 x | 4 2 – 1 3 – | A C x A D# x | hard | |
| 5 3 7 5 3 x | 2 1 4 3 1 – | A C A C D# x | hard · barre on fret 3 | |
| 5 0 7 8 0 4 | 2 – 3 4 – 1 | A A A D# C A | hard | |
| 5 6 7 5 0 7 | 1 2 3 1 – 4 | A D# A C C C | medium · barre on fret 5 | |
| x 6 7 8 0 7 | – 1 2 4 – 3 | x D# A D# C C | medium | |
| 8 0 7 8 9 7 | 2 – 1 3 4 1 | C A A D# A C | medium · barre on fret 7 | |
| 8 0 10 8 0 10 | 1 – 3 2 – 4 | C A C D# C D# | medium | |
| x 0 10 x 9 10 | – – 2 – 1 3 | x A C x A D# | easy | |
| 11 0 10 x x x | 2 – 1 – – – | D# A C x x x | easy | |
| 11 0 x x 12 x | 1 – – – 2 – | D# A x x C x | easy | |
| x 0 1 2 0 4 | – – 1 2 – 3 | x A D# A C A | medium | |
| x 3 x 2 3 x | – 2 – 1 3 – | x C x A D# x | easy | |
| 5 3 x 5 3 x | 3 1 – 4 2 – | A C x C D# x | hard | |
| 8 0 7 8 0 4 | 3 – 2 4 – 1 | C A A D# C A | hard | |
| 5 6 7 5 0 x | 1 2 3 1 – – | A D# A C C x | medium · barre on fret 5 |
The A° chord (Diminished) is built from the notes A, C, D#. 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 | 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.