Dim & aug familyvii°7 in B harmonic minor
B♭ diminished seventh chord
B♭dim7B♭ diminished seventh
Piano root position
- Root
- ♭3
- ♭5
- 𝄫7
Guitar standard tuning
Barre · fret 5
Lay your index flat across strings 4 to 2 at fret 5.
Finger: 1 index, 2 middle, 3 ring, 4 little
Notation treble clef
Intervals
12 semitones- B♭1
- ♭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?
B♭dim7 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 · B♭o7
- Found in
- vii°7 in B harmonic minor
Neighbours
Chords close to B♭dim7
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