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Bm7♭5

Character: wistful

  1. BRtriad
  2. D♭3triad
  3. F♭5triad
  4. A♭7add
Open Bm7♭5 in the chord libraryDownload the Bm7♭5 chart (PDF)
Voicings

10 ways to play Bm7♭5

Every voicing sits inside one of the five CAGED shapes, low to high on the neck, with its octave doublings in grey.

  • Triad note
  • Substitute
  • Added
  • Anchored root
  • Bass
  • Doubling
CC shape 2nd inversion Bm7♭5/F
1 2 3 4 ♭7 ♭3 R ♭5 ♭5 R

Frets 1 2 0 2 0 1Notes F B D AIntervals ♭5 1 ♭3 ♭7Base triadB diminished, 2nd inversion

The ♭7th gets a string of its own.

CC shape 3rd inversion Bm7♭5/A
10 11 12 13 14 R ♭5 ♭3 ♭7

Frets x 12 12 10 12 xNotes A D F BIntervals ♭7 ♭3 ♭5 1Base triadB diminished, 1st inversion

The ♭7th gets a string of its own.

AA shape 2nd inversion Bm7♭5/F
1 2 3 4 5 ♭7 ♭3 R ♭5

Frets x x 3 4 3 5Notes F B D AIntervals ♭5 1 ♭3 ♭7Base triadB diminished, 2nd inversion

The ♭7th gets a string of its own.

AA shape 3rd inversion Bm7♭5/A
1 2 3 4 ♭3 R ♭5 ♭7

Frets x 0 3 4 3 xNotes A F B DIntervals ♭7 ♭5 1 ♭3Base triadB diminished, 2nd inversion

The ♭7th gets a string of its own.

AA shape 2nd inversion AnchoredBm7♭5
1 2 3 4 R ♭3 ♭7 ♭5 R

Frets x 2 3 2 3 xNotes B F A DIntervals 1 ♭5 ♭7 ♭3Base triadB diminished, 2nd inversion

The root drops to the string below the triad. The ♭7th takes the root’s string.

GG shape 3rd inversion Bm7♭5/A
3 4 5 6 7 R ♭5 ♭3 ♭7

Frets 5 5 3 4 x xNotes A D F BIntervals ♭7 ♭3 ♭5 1Base triadB diminished, 1st inversion

The ♭7th gets a string of its own.

EE shape 3rd inversion Bm7♭5/A
6 7 8 9 R ♭5 ♭3 ♭7

Frets x x 7 7 6 7Notes A D F BIntervals ♭7 ♭3 ♭5 1Base triadB diminished, 1st inversion

The ♭7th gets a string of its own.

EE shape 2nd inversion Bm7♭5/F
7 8 9 10 ♭7 ♭3 R ♭5 R R

Frets 7 8 9 7 10 7Notes F B D AIntervals ♭5 1 ♭3 ♭7Base triadB diminished, 2nd inversion

The ♭7th gets a string of its own.

EE shape 2nd inversion AnchoredBm7♭5
7 8 9 10 R ♭3 ♭7 ♭5 R R R

Frets 7 8 7 7 0 7Notes B F A DIntervals 1 ♭5 ♭7 ♭3Base triadB diminished, 2nd inversion

The root drops to the string below the triad. The ♭7th takes the root’s string.

DD shape 2nd inversion AnchoredBm7♭5
9 10 11 12 R ♭3 ♭7 ♭5 R

Frets x x 9 10 10 10Notes B F A DIntervals 1 ♭5 ♭7 ♭3Base triadB diminished, 2nd inversion

The root drops to the string below the triad. The ♭7th takes the root’s string.

The rules

The construction rules Bm7♭5 follows

  1. Start from a triad

    Root, 3rd and 5th, stacked in thirds. The 3rd makes it major or minor; the 5th makes it diminished or augmented when it moves.

  2. A third on top makes a 7th chord

    A major 7th over a major triad is maj7, a ♭7 is a dominant 7. Over minor you get m7 or m(maj7); over diminished, m7♭5 or the °7, whose 7th is lowered twice.

  3. On guitar, something has to give

    Each extension takes the string of a triad note that matters less, usually the 5th, or gets a string of its own. The root and 3rd stay: they say what the chord is.

  4. The root can move down

    When an extension needs the root’s string, the root can drop to the string below the triad: an anchored voicing keeps the bass and frees a string on top.

All the rules, with examples, in the guide to the chord library.

Minor 7th ♭5 (half-diminished) in every key

More chords on B

Bm7♭5 chord questions

What notes are in Bm7♭5?

Bm7♭5 is spelled B D F A: B is the root, D is the ♭3rd, F is the ♭5th, A is the ♭7th.

What is the formula of Bm7♭5?

1 ♭3 ♭5 ♭7. It is a B diminished triad with the ♭7th stacked on top.

How many ways can you play Bm7♭5 on guitar?

This page shows 10 voicings of Bm7♭5, filed under the five CAGED shapes and named by inversion, from the open position up to the 16th fret.