Key

BmMaj7b5 guitar chord

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About BmMaj7b5

BmMaj7b5 names three separate instructions: a minor 3rd, , and major 7th. The result is B, D, F and A#.

The flat 5th is the only change from . It must sound, or the voicing is only . This is neither a half-diminished nor diminished-seventh chord.

Also written BmM7b5 or Bm(maj7)b5.

B diminished scale
+C#EGG#
Contains BmMaj7b5 and adds ninth, eleventh, sharp fifth and thirteenth.

A# → Ab
Replace the major seventh with the diminished seventh.
See Bdim7 chord →
D → D#
Raise the minor third to the major third.
See Bmaj7b5 chord →
A# → A
Lower the major seventh to the flat seventh.
See Bm7b5 chord →
F → F#
Raise the flat fifth to the fifth.
See BmMaj7 chord →

The common shapes and the derived voicings come from different places, and both are explained in how this site is built.