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B°7 Chord on Guitar

B°7 is the B diminished 7th chord — 4 notes (B, D, F, A♭) built from the formula 1 ♭3 ♭5 ♭♭7. Below are playable shapes across the fretboard, the keys it belongs to and the scales to use when soloing over it.

Notes: B · D · F · A♭Formula: 1 · ♭3 · ♭5 · ♭♭7Hear it and see it on the fretboard ▸

B°7: Chord shapes (open & barre)

  • B°7 – open position×R♭3♭♭7R♭5open position
  • B°7 – fret 1×R♭5♭♭7♭3♭5fret 1
  • B°7 – fret 66R♭5♭♭7♭3♭5×fret 6
  • B°7 – fret 77R♭5R♭3♭♭7Rfret 7
  • B°7 – fret 99××R♭5♭♭7♭3fret 9
  • B°7 – fret 1212×R♭3♭♭7R♭5fret 12
  • B°7 – fret 1313×R♭5♭♭7♭3♭5fret 13

B°7: Drop 2 voicings

  • B°7 – bass: ♭512♭5R♭3♭♭7××bass: ♭5
  • B°7 – bass: ♭57×♭5R♭3♭♭7×bass: ♭5
  • B°7 – bass: ♭5××♭5R♭3♭♭7bass: ♭5
  • B°7 – bass: ♭♭7♭♭7♭3♭5R××bass: ♭♭7
  • B°7 – bass: ♭♭710×♭♭7♭3♭5R×bass: ♭♭7
  • B°7 – bass: ♭♭76××♭♭7♭3♭5Rbass: ♭♭7
  • B°7 – bass: R6R♭5♭♭7♭3××bass: R
  • B°7 – bass: R×R♭5♭♭7♭3×bass: R
  • B°7 – bass: R9××R♭5♭♭7♭3bass: R
  • B°7 – bass: ♭39♭3♭♭7R♭5××bass: ♭3
  • B°7 – bass: ♭34×♭3♭♭7R♭5×bass: ♭3
  • B°7 – bass: ♭312××♭3♭♭7R♭5bass: ♭3

B°7: Drop 3 voicings

  • B°7 – bass: ♭39♭3×R♭5♭♭7×bass: ♭3
  • B°7 – bass: ♭34×♭3×R♭5♭♭7bass: ♭3
  • B°7 – bass: ♭512♭5×♭3♭♭7R×bass: ♭5
  • B°7 – bass: ♭57×♭5×♭3♭♭7Rbass: ♭5
  • B°7 – bass: ♭♭7♭♭7×♭5R♭3×bass: ♭♭7
  • B°7 – bass: ♭♭710×♭♭7×♭5R♭3bass: ♭♭7
  • B°7 – bass: R6R×♭♭7♭3♭5×bass: R
  • B°7 – bass: R×R×♭♭7♭3♭5bass: R

B°7: Shell voicings (jazz)

  • B°7 – R-3-75R♭3♭♭7×××R-3-7
  • B°7 – R-3-712×R♭3♭♭7××R-3-7
  • B°7 – R-7-36R×♭♭7♭3××R-7-3
  • B°7 – R-7-3×R×♭♭7♭3×R-7-3

Scales to play over B°7

Ordered from the most common choice. All of them contain B, D, F, A♭.

Other B chords

Triads

Sevenths

Sixths

Added

Extended

Diminished 7th chords in other keys

FAQ

What notes are in the B°7 chord?
B°7 (B diminished 7th) contains B, D, F, A♭ — formula 1 ♭3 ♭5 ♭♭7.
How do you play B°7 on guitar?
A common shape is x20101 (low E to high E, x = muted string, open position). This page shows more shapes, drop 2, drop 3 and shell voicings in the interactive library.
What scale goes with B°7?
Good choices to solo over B°7: B Diminished (whole-half), B Superlocrian 𝄫7, B Locrian ♮6.