Dim & aug familyviiø7 in B major
B♭ half-diminished chord
B♭m7♭5B♭ half-diminished
Piano root position
- Root
- ♭3
- ♭5
- ♭7
Guitar standard tuning
Barre · fret 1
Lay your index flat across strings 5 to 3 at fret 1.
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
- 6
- A♭♭7
- 7
- B♭ Root
- D♭ Minor 3rd
- F♭ Diminished 5th
- A♭ Minor 7th
About this chord
What is a B♭ half-diminished chord?
B♭m7♭5 is built from 4 notes: B♭ (the root), D♭ (the ♭3), F♭ (the ♭5), A♭ (the ♭7). The ii chord of a minor key: dark but softer than fully diminished.
- Notes
- B♭ · D♭ · F♭ · A♭
- Formula
- 1 · ♭3 · ♭5 · ♭7
- Also written
- B♭ø7 · B♭ø
- Found in
- viiø7 in B major · iiø7 in G♯ minor
Neighbours
Chords close to B♭m7♭5
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