Also B♭ Major (Ionian), C Dorian

A Locrian: A B♭ C D E♭ F G. Formula 1 ♭2 ♭3 4 ♭5 ♭6 ♭7. Same notes as B♭ Major (Ionian), C Dorian, D Phrygian. The darkest mode, with a flat 2nd and a flat 5th: its tonic chord is diminished, so it rarely feels at rest. It fits over half-diminished chords.

Made of7

Contains & part of14

Diatonic chords14

Sevenths

Relatives27

Cadences5

In B♭ major, the key A Locrian belongs to

Progressions10

Progressions on A Locrian