Locrian · B · Guitar
The B Locrian scale is B C D E F G A — formula 1 ♭2 ♭3 4 ♭5 ♭6 ♭7, step pattern H–W–W–H–W–W–W. Use it over Bm7♭5: it is the scale for half-diminished (m7♭5) chords — the iiø7 in a minor ii–V–i. Below, every note is marked on the fretboard in standard tuning; press play to hear it on a synthesized guitar while each note lights up, or tap any fret to sound that note.
Visualizer
Guitar · standard tuning
Piano
Tap any note on the diagram to hear it. Play loops the scale up and down one octave in eighth notes (switch Loop off for a single pass) in the position starting at fret 7. “Show” switches or combines the fretboard and keyboard; “Sound” picks the instrument you hear. Audio is synthesized in the browser.
Reference
| Degree | Note | Interval from B | Step to next |
|---|---|---|---|
| 1 | B | unison (0 semitones) | H |
| ♭2 | C | minor 2nd (1 semitones) | W |
| ♭3 | D | minor 3rd (3 semitones) | W |
| 4 | E | perfect 4th (5 semitones) | H |
| ♭5 | F | tritone (6 semitones) | W |
| ♭6 | G | minor 6th (8 semitones) | W |
| ♭7 | A | minor 7th (10 semitones) | W |
Chord it implies: Bm7♭5 (B – D – F – A). Use it for: half-diminished (m7♭5) chords — the iiø7 in a minor ii–V–i.
Common questions
B C D E F G A. As scale degrees: 1 ♭2 ♭3 4 ♭5 ♭6 ♭7. It has 7 notes.
B Locrian fits Bm7♭5 and, more generally, half-diminished (m7♭5) chords — the iiø7 in a minor ii–V–i.
1 ♭2 ♭3 4 ♭5 ♭6 ♭7 — the step pattern from the root is H W W H W W W (W = whole step, H = half step).
Start on the root B on the low E string at fret 7, and play the one-octave position shown: E-string fret 7, E-string fret 8, E-string fret 10, A-string fret 7, A-string fret 8, A-string fret 10, D-string fret 7, D-string fret 9. Every B on the neck is a root, so the same shape works in every position where the notes are marked.
Keep going
Same scale on piano · all Locrian pages: Locrian hub · practise it in context: ii–V–I trainer · theory: chord-scale theory.
Other scales from B