Mode

Bb Locrian

The Bb Locrian mode (also written A#) — Bb Cb Db Eb Fb Gb Ab — shown across the guitar neck.

Also written A# Locrian. A# and Bb are the same pitch — Bb is the spelling in common use.

13578910121415eBGDAEFbGbAbBbCbDbEbFbGbCbDbEbFbGbAbBbCbDbAbBbCbDbEbFbGbAbBbEbFbGbAbBbCbDbEbFbBbCbDbEbFbGbAbBbCbFbGbAbBbCbDbEbFbGb

Swipe the neck sideways to see the higher frets.

Bb Locrian is the natural minor with the b2 and b5 — Cb and Fb. Those are the notes that give it its character.

Notes
Bb   Cb   Db   Eb   Fb   Gb   Ab
Intervals
1   b2   b3   4   b5   b6   b7
Parent scale
Cb Major (also written B)
Degree of parent
7
Open Bb Locrian in the tool →

The tool shows this from its parent key, B major, with A# — the same pitch as Bb — marked as where Locrian begins, the same seven notes centered on B.

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