A°7 chord on Dobro / Resonator
in Open G (GBDGBD) 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 |
|---|---|---|---|---|
| 2 1 1 2 1 4 | 2 1 1 3 1 4 | A C D# A C F# | medium · barre on fret 1 | |
| 2 4 4 5 x x | 1 2 3 4 – – | A D# F# C x x | medium | |
| x x 7 5 4 4 | – – 4 3 1 2 | x x A C D# F# | medium | |
| 5 7 7 8 x x | 1 2 3 4 – – | C F# A D# x x | medium | |
| x 10 7 8 7 10 | – 3 1 2 1 4 | x A A D# F# C | medium · barre on fret 7 | |
| 8 10 10 11 x x | 1 2 3 4 – – | D# A C F# x x | medium | |
| 2 1 4 2 1 1 | 2 1 4 3 1 1 | A C F# A C D# | medium · barre on fret 1 | |
| 2 x 4 5 4 x | 1 – 2 4 3 – | A x F# C D# x | hard | |
| 5 4 4 5 4 7 | 2 1 1 3 1 4 | C D# F# C D# A | medium · barre on fret 4 | |
| 8 7 7 5 x x | 4 2 3 1 – – | D# F# A C x x | medium | |
| x x 7 8 7 10 | – – 1 2 1 3 | x x A D# F# C | medium · barre on fret 7 | |
| 11 10 10 8 x x | 4 2 3 1 – – | F# A C D# x x | medium | |
| 2 1 1 5 1 4 | 2 1 1 4 1 3 | A C D# C C F# | hard · barre on fret 1 | |
| 2 x x 5 4 4 | 1 – – 4 2 3 | A x x C D# F# | hard | |
| 5 4 7 5 4 4 | 2 1 4 3 1 1 | C D# A C D# F# | medium · barre on fret 4 | |
| 5 x 7 8 7 x | 1 – 2 4 3 – | C x A D# F# x | hard |
The A°7 chord (Diminished 7) is built from the notes A, C, D#, F#. Below are playable fingerings for Dobro / Resonator 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.