Locrian 6 is an unstable minor mode with a diminished fifth but a natural sixth. That combination keeps the tense Locrian core while opening the upper color slightly. In the harmonic minor modal system, Locrian 6 is the 2nd mode.
Construction and formula
Locrian 6 follows 1-♭2-♭3-4-♭5-6-♭7, with step pattern H-W-W-H-W+H-H-W. In B Locrian 6, the notes are B-C-D-E-F-G♯-A. Compared with regular Locrian (1-♭2-♭3-4-♭5-♭6-♭7), only the 6th degree is raised.
That natural 6 is the defining color tone: it removes some of Locrian's dense darkness while preserving its unstable identity through ♭2 and ♭5.
Musical usage
Locrian 6 is often used over half-diminished minor sonorities when you want more color than strict diatonic Locrian language. In modern jazz and cinematic writing, it gives tension with slightly more melodic flexibility.
Melodically, emphasizing ♭2, ♭5, and 6 establishes the mode quickly. Harmonically, it works best when voice-leading clearly targets the next functional chord.
Examples
- Lines over m7♭5 harmony using natural 6 as a color tone.
- Minor progressions with controlled instability before resolution.
- Comparative practice between Locrian and Locrian 6 on one root.
- Modal textures that stay dark but not fully closed in color.
In practice
Start with arpeggio and guide-tone work centered on ♭5 and 6 so the modal difference is audible. Then build short motifs that contrast ♭6 versus 6 to internalize the harmonic-minor-derived sound.
For improvisation, anchor phrases on 1, ♭3, and ♭7 while using ♭2 and ♭5 as directed tension points. For composition, choose Locrian 6 when you want dark harmonic motion with refined upper color and clear release paths.
