A° chord on 6-String Guitar – Open B
in Open B (B-F#-B-F#-B-D#) tuning
A°
Diminished
Notes:A · C · D#
Piano Left hand Right hand
Fingerings (16)
A° shapes as text
| Shape | Frets | Fingers | Notes | Difficulty |
|---|---|---|---|---|
| x 3 1 3 1 0 | – 2 1 3 1 – | x A C A C D# | medium · barre on fret 1 | |
| x 3 4 6 4 x | – 1 2 4 3 – | x A D# C D# x | medium | |
| 4 6 4 6 4 6 | 1 2 1 3 1 4 | D# C D# C D# A | medium · barre on fret 4 | |
| 10 6 10 6 10 0 | 2 1 3 1 4 – | A C A C A D# | hard · barre on fret 6 | |
| 10 9 10 9 10 9 | 2 1 3 1 4 1 | A D# A D# A C | medium · barre on fret 9 | |
| x 3 1 3 4 0 | – 2 1 3 4 – | x A C A D# D# | medium | |
| x 3 4 6 x x | – 1 2 3 – – | x A D# C x x | medium | |
| x 6 4 6 4 6 | – 2 1 3 1 4 | x C D# C D# A | medium · barre on fret 4 | |
| 10 6 10 9 x x | 3 1 4 2 – – | A C A D# x x | hard | |
| x x 10 9 10 9 | – – 2 1 3 1 | x x A D# A C | easy · barre on fret 9 | |
| x 3 4 3 1 0 | – 2 4 3 1 – | x A D# A C D# | medium | |
| x 3 x 6 4 6 | – 1 – 3 2 4 | x A x C D# A | hard | |
| x x 4 6 4 6 | – – 1 2 1 3 | x x D# C D# A | medium · barre on fret 4 | |
| 10 9 10 6 x x | 3 2 4 1 – – | A D# A C x x | hard | |
| 10 x 10 9 10 9 | 2 – 3 1 4 1 | A x A D# A C | hard · barre on fret 9 | |
| x x x 3 1 0 | – – – 2 1 – | x x x A C D# | medium |
The A° chord (Diminished) is built from the notes A, C, D#. Below are playable fingerings for 6-String Guitar – Open B 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.