Dim & aug familyvii°7 in C harmonic minor
B diminished seventh chord
Bdim7B diminished seventh
Piano root position
- Root
- ♭3
- ♭5
- 𝄫7
Guitar standard tuning
Fret 1
No barre: each note has its own finger.
Finger: 1 index, 2 middle, 3 ring, 4 little
Notation treble clef
Intervals
12 semitones- B1
- ♭2
- 2
- D♭3
- 3
- 4
- F♭5
- 5
- ♯5
- A♭𝄫7
- ♭7
- 7
- B Root
- D Minor 3rd
- F Diminished 5th
- A♭ Diminished 7th
About this chord
What is a B diminished seventh chord?
Bdim7 is built from 4 notes: B (the root), D (the ♭3), F (the ♭5), A♭ (the 𝄫7). Symmetrical stacked minor thirds: dramatic, silent-film suspense.
- Notes
- B · D · F · A♭
- Formula
- 1 · ♭3 · ♭5 · 𝄫7
- Also written
- B°7 · Bo7
- Found in
- vii°7 in C harmonic minor
Neighbours
Chords close to Bdim7
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