Bm7b5 chord
B half diminished seventh
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ukulele fretboard
G
F#
G
G#
Ab7
A#
B
C
C#
D
D#
E
F
F#
G
A
C
C
C#
Db3
D#
E
F
F#
G
G#
A
A#
B
C
D
E
D#
E
Fb5
F#
G
G#
A
A#
B
C
C#
D
D#
E
F
A
G#
A
A#
B1
C
C#
D
D#
E
F
F#
G
G#
A
B
3
5
7
10
The Bm7b5 chord has the formula 1, b3, b5, b7 with notes B, D, F, A
The half diminished seventh chord is a variation of the minor seventh chord and is found in pop, R&B and jazz. It is typically used as a versatile passing chord and its feel is defined by the chord that follows it.