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Bm7♭5 chord

B Half-Diminished 7th

Bm7b5 · Root

1B3b3D4b5F4b7A4
1C4b3b5b7C5

Every chord tone stacked from the root up.

Click keys to experiment with the chord

Notes

B – D – F – A

Formula

1 – b3 – b5 – b7

Practice Note

The half-diminished chord is the usual iiø7 in a minor-key ii–V–i, commonly paired with Locrian or Locrian natural 2. Its b5 and b7 lead into the dominant; the root may be omitted in a piano voicing when supplied by bass.

Try next

Bm7 · SiblingBdim7 · SiblingE7b9 · Next in ii–VAm · ii–V–i targetDm6 · Same notesG9 · Same notes (rootless)

About Bm7b5

The Bm7b5 chord sounds dark and ambiguous, the classic jazz ii chord in minor keys. Its notes are B, D, F, A. This chord is commonly heard in jazz.

Jazz
All B chords (61)

Triads

B — MajorBm — MinorBdim — DiminishedBaug — AugmentedBsus2 — Suspended 2ndBsus4 — Suspended 4thB5 — Power Chord

7ths

B7 — Dominant 7thBmaj7 — Major 7thBm7 — Minor 7thBm7#5 — Minor 7th Sharp 5Bdim7 — Diminished 7thB6 — Major 6thBm6 — Minor 6thB7sus4 — Dominant 7th Sus4B7sus2 — Dominant 7th Sus2

Extended

B9 — Dominant 9thBmaj9 — Major 9thBm9 — Minor 9thBadd9 — Add 9Badd11 — Add 11Badd2 — Add 2Badd#11 — Add Sharp 11B11 — Dominant 11thB13 — Dominant 13thB6/9 — 6/9Bmaj13 — Major 13thBm(add2) — Minor Add 2Bm(add9) — Minor Add 9Bm(add11) — Minor Add 11BmMaj7 — Minor Major 7thBm11 — Minor 11thBm13 — Minor 13thBm6/9 — Minor 6/9B7#11 — Dominant 7th Sharp 11B9#11 — Dominant 9th Sharp 11B13#11 — Dominant 13th Sharp 11B9sus4 — Dominant 9th Sus4B13sus4 — Dominant 13th Sus4Bmaj7#11 — Major 7th Sharp 11Bmaj9#11 — Major 9th Sharp 11BmMaj9 — Minor Major 9thBm9b5 — Half-Diminished 9th

Altered

B7#9 — Dominant 7th Sharp 9B7b9#9 — Dominant 7th Flat 9 Sharp 9B13#9 — Dominant 13th Sharp 9B7b9 — Dominant 7th Flat 9B7#5 — Dominant 7th Sharp 5B7b5 — Dominant 7th Flat 5B7alt — Altered DominantB7#9#5 — Dominant 7th #9 #5B7b9b5 — Dominant 7th b9 b5B7#9b5 — Dominant 7th #9 b5B7sus4b9 — Dominant 7th Sus4 Flat 9B9#5 — Dominant 9th Sharp 5B9b5 — Dominant 9th Flat 5B13b9 — Dominant 13th Flat 9B7b13 — Dominant 7th Flat 13Baug7 — Augmented 7thBdim(maj7) — Diminished Major 7thBaugMaj7 — Augmented Major 7th