How to play Bm7b5: a half-diminished (m7b5) built on B, with 1 voicing, the notes, the keys it belongs to, and songs that use it.
The first diagram is a common voicing: played at the first few frets. An X above a string means don't play it; an O means play it open.
Frets from the low E string to the high E string: x 2 3 2 3 x (x = not played).
| Note | B | D | F | A |
|---|---|---|---|---|
| Interval | R | b3 | b5 | b7 |
Bm7b5 is a half-diminished (m7b5) with B as its root. The full theoretical spelling is B, D, F, A. This voicing sounds every chord tone.
Bm7b5 is a diatonic chord (built from the key's own notes) in 1 major key and 2 minor keys. The roman numeral is the chord's place in that key; tap a key for all of its chords.
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Bm7b5 is spelled B, D, F, A: the root, minor 3rd, flat 5th, flat 7th. The common guitar voicing sounds every one of them.
Frets from the low E string to the high E string: x 2 3 2 3 x (x means the string is not played). Lay your index finger across the 2nd fret from the A string to the G string (a barre). Add the D and B strings at the 3rd fret. Strum from the A string down, skipping the high E string; the low E string stays silent.
Bm7b5 belongs to 3 keys: C major (the viiø chord), A minor (the iiø) and F# minor (the ivø, from the harmonic minor).
