Piano chord · Sevenths
B♭ half-diminished 7th chord on piano
Right hand: B♭ (1), D♭ (2), F♭ (3), A♭ (5)
How to play B♭m7♭5 on piano: the keys to press, which fingers to use, inversions and how it’s written on the staff.
Dark and unresolved; often the ii chord in a minor key.
B♭m7♭5 is the viiø7 chord in B major. In minor keys: iiø7 in G♯ minor.
- Notes
- B♭D♭F♭A♭
- Formula
- 1♭3♭5♭7
- Built from
- root · minor 3rd · diminished 5th · minor 7th
Piano
Root position · numbers are finger numbers
How to play it
Right handB♭1 · thumbD♭2 · indexF♭3 · middleA♭5 · pinky
Left handB♭5 · pinkythe root, an octave lower
Finger numbers: 1 thumb · 2 index · 3 middle · 4 ring · 5 pinky. Inversions use the same notes with a different one on the bottom — they help you move smoothly between chords. Tap any key to hear it.
Tips for playing B♭m7♭5 on piano
On piano, B♭m7♭5 has three black keys (B♭, D♭ and A♭) and one white key.
Notice the F♭ in B♭m7♭5 (B♭ D♭ F♭ A♭): each note of the chord takes its own letter (B–D–F–A), so the diminished 5th has to be written F♭ rather than E — the same key on a piano, spelled to fit the chord.
