A°7 chord on 4-String Bass – Drop C
in Drop C (C-G-C-F) tuning
A°7
Diminished 7
Notes:A · C · D# · F#
Piano Left hand Right hand
Fingerings (12)
A°7 shapes as text
| Shape | Frets | Fingers | Notes | Difficulty |
|---|---|---|---|---|
| 0 2 3 1 | – 2 3 1 | C A D# F# | medium | |
| 3 5 6 4 | 1 3 4 2 | D# C F# A | medium | |
| 0 8 6 4 | – 3 2 1 | C D# F# A | hard | |
| 9 8 6 7 | 4 3 1 2 | A D# F# C | medium | |
| 9 11 0 10 | 1 3 – 2 | A F# C D# | medium | |
| 3 2 0 1 | 3 2 – 1 | D# A C F# | medium | |
| 6 5 3 4 | 4 3 1 2 | F# C D# A | medium | |
| 6 8 0 4 | 2 3 – 1 | F# D# C A | hard | |
| 6 8 9 7 | 1 3 4 2 | F# D# A C | medium | |
| 9 11 12 10 | 1 3 4 2 | A F# C D# | medium | |
| 0 11 9 10 | – 3 1 2 | C F# A D# | medium | |
| 12 11 9 10 | 4 3 1 2 | C F# A D# | medium |
The A°7 chord (Diminished 7) is built from the notes A, C, D#, F#. Below are playable fingerings for 4-String Bass – Drop 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.