B-flat half-diminished seventh
Bbm7b5 Piano Voicings
Bbm7b5, the half-diminished chord, is the ii chord of a minor ii-V-i. Its lowered fifth gives the tense, unresolved colour that defines minor-key jazz.
Drill Bbm7b5 in all 12 keysThe notes in Bbm7b5
- Bb R
- Db ♭3
- Fb ♭5
- Ab ♭7
Bbm7b5 voicings on piano
Each voicing is the exact shape the trainer drills. Press play to hear it — as a block chord or rolled note by note.
Root Position
Bb · Db · Fb · Ab R · ♭3 · ♭5 · ♭7
Shell Voicing
Bb · Db · Ab R · ♭3 · ♭7
Rootless A
Db · Fb · Ab · C ♭3 · ♭5 · ♭7 · 9
Rootless B
Ab · C · Db · Fb ♭7 · 9 · ♭3 · ♭5
Where Bbm7b5 fits in a ii-V-I
Bbm7b5, the half-diminished chord, is the ii chord of a minor ii-V-i. Its lowered fifth gives the tense, unresolved colour that defines minor-key jazz.
The fastest way to internalise Bbm7b5 is to drill it in context across all 12 keys until the shape is automatic.
Practice the full ii-V-I progressionBbm7b5 — frequently asked questions
What notes are in Bbm7b5?
Bbm7b5 contains Bb, Db, Fb, Ab — root, minor third, diminished (flat) fifth and flat seventh.
What is Bbm7b5 used for?
Bbm7b5 most often appears as the ii chord in a minor ii-V-i, setting up the dominant that resolves to a minor tonic.