B°7 chord on 6-String Guitar – Open A
in Open A (E-A-C#-E-A-E) tuning · Also known as Spanish A
B°7
Diminished 7
Notes:B · D · F · G#
Piano Left hand Right hand
Fingerings (16)
B°7 shapes as text
| Shape | Frets | Fingers | Notes | Difficulty |
|---|---|---|---|---|
| x 2 1 4 2 1 | – 2 1 4 3 1 | x B D G# B F | medium · barre on fret 1 | |
| x 2 4 4 5 x | – 1 2 3 4 – | x B F G# D x | medium | |
| 7 5 4 4 5 4 | 4 2 1 1 3 1 | B D F G# D G# | medium · barre on fret 4 | |
| 7 5 7 x 8 x | 2 1 3 – 4 – | B D G# x F x | hard | |
| 7 8 7 7 8 10 | 1 2 1 1 3 4 | B F G# B F D | medium · barre on fret 7 | |
| x 8 10 10 11 x | – 1 2 3 4 – | x F B D G# x | medium | |
| x 2 1 4 5 1 | – 2 1 3 4 1 | x B D G# D F | hard · barre on fret 1 | |
| x 2 4 x 5 4 | – 1 2 – 4 3 | x B F x D G# | hard | |
| 7 5 4 4 8 4 | 3 2 1 1 4 1 | B D F G# F G# | hard · barre on fret 4 | |
| 7 8 7 x 5 x | 2 4 3 – 1 – | B F G# x D x | hard | |
| 7 8 7 10 8 7 | 1 2 1 4 3 1 | B F G# D F B | medium · barre on fret 7 | |
| x 11 10 10 8 x | – 4 2 3 1 – | x G# B D F x | medium | |
| x 2 1 1 x 4 | – 3 1 2 – 4 | x B D F x G# | hard | |
| x 5 4 4 2 x | – 4 2 3 1 – | x D F G# B x | medium | |
| 7 8 4 4 5 4 | 3 4 1 1 2 1 | B F F G# D G# | hard · barre on fret 4 | |
| x 5 7 7 8 x | – 1 2 3 4 – | x D G# B F x | medium |
The B°7 chord (Diminished 7) is built from the notes B, D, F, G#. Below are playable fingerings for 6-String Guitar – Open A 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 B°7 chord is built
Formula: 1 · ♭3 · ♭5 · 6
| Degree | Semitones | Note |
|---|---|---|
| 1 | 0 | B |
| ♭3 | 3 | D |
| ♭5 | 6 | F |
| 6 | 9 | G# |
More B chords
Other roots
See B°7 in another tuning
What notes make up the B°7 chord?
B°7 is a Diminished 7 chord built from the notes B, D, F, G#.
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.