A°7 chord on 12-String Guitar – Open C
in Open C (C-C-G-G-C-C-G-G-C-C-E-E) tuning
A°7
Diminished 7
Notes:A · C · D# · F#
Piano Left hand Right hand
Fingerings (16)
A°7 shapes as text
| Shape | Frets | Fingers | Notes | Difficulty |
|---|---|---|---|---|
| x x 2 2 0 0 2 2 3 3 2 2 | – – 1 1 – – 2 2 4 4 3 3 | x x A A C C A A D# D# F# F# | medium | |
| x x 2 2 3 3 5 5 3 3 2 2 | – – 1 1 2 2 4 4 3 3 1 1 | x x A A D# D# C C D# D# F# F# | medium · barre on fret 2 | |
| x x x x 3 3 5 5 6 6 5 5 | – – – – 1 1 2 2 4 4 3 3 | x x x x D# D# C C F# F# A A | medium | |
| 9 9 8 8 0 0 5 5 6 6 5 5 | 4 4 3 3 – – 1 1 2 2 1 1 | A A D# D# C C C C F# F# A A | hard · barre on fret 5 | |
| 9 9 8 8 0 0 8 8 6 6 x x | 4 4 2 2 – – 3 3 1 1 – – | A A D# D# C C D# D# F# F# x x | medium | |
| 9 9 11 11 0 0 8 8 9 9 8 8 | 2 2 4 4 – – 1 1 3 3 1 1 | A A F# F# C C D# D# A A C C | medium · barre on fret 8 | |
| 9 9 11 11 9 9 11 11 0 0 11 11 | 1 1 2 2 1 1 3 3 – – 4 4 | A A F# F# A A F# F# C C D# D# | medium · barre on fret 9 | |
| x x 2 2 3 3 2 2 0 0 2 2 | – – 1 1 4 4 2 2 – – 3 3 | x x A A D# D# A A C C F# F# | medium | |
| x x 2 2 3 3 5 5 6 6 2 2 | – – 1 1 2 2 3 3 4 4 1 1 | x x A A D# D# C C F# F# F# F# | hard · barre on fret 2 | |
| x x x x 6 6 5 5 3 3 5 5 | – – – – 4 4 2 2 1 1 3 3 | x x x x F# F# C C D# D# A A | medium | |
| 9 9 5 5 0 0 8 8 6 6 x x | 4 4 1 1 – – 3 3 2 2 – – | A A C C C C D# D# F# F# x x | hard | |
| 9 9 8 8 6 6 8 8 0 0 x x | 4 4 2 2 1 1 3 3 – – – – | A A D# D# F# F# D# D# C C x x | medium | |
| 9 9 11 11 0 0 8 8 12 12 8 8 | 2 2 3 3 – – 1 1 4 4 1 1 | A A F# F# C C D# D# C C C C | hard · barre on fret 8 | |
| 9 9 11 11 0 0 11 11 0 0 11 11 | 1 1 2 2 – – 3 3 – – 4 4 | A A F# F# C C F# F# C C D# D# | medium | |
| x x 2 2 0 0 5 5 3 3 2 2 | – – 1 1 – – 4 4 3 3 2 2 | x x A A C C C C D# D# F# F# | medium | |
| x x 2 2 6 6 5 5 3 3 2 2 | – – 1 1 4 4 3 3 2 2 1 1 | x x A A F# F# C C D# D# F# F# | hard · barre on fret 2 |
The A°7 chord (Diminished 7) is built from the notes A, C, D#, F#. Below are playable fingerings for 12-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°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
Other roots
See A°7 in another tuning
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.