B Locrian ♯2

Compared with Locrian (1-♭2-♭3-4-♭5-♭6-♭7), only one degree changes: ♭2 becomes 2. That single shift gives more melodic flexibility while preserving the diminished fifth identity.

Musical usage

Locrian ♯2 is often used over half-diminished harmony (m7♭5), especially in minor-key jazz language. It provides the dark function of Locrian without the immediate friction of ♭2 against the root.

Melodically, lines can move more naturally through 1-2-♭3 while still emphasizing ♭5 for color. Harmonically, voicings that highlight ♭5 and ♭7 keep the mode clearly grounded.

Examples

• Minor iiø passages in jazz standards and modal reharmonization.
• Modern lines over m7♭5 chords with smoother scalar motion.
• Film textures needing unstable minor color without extreme dissonance.
• Comparative studies between Locrian and Locrian ♯2.

In practice

Practice Locrian and Locrian ♯2 on the same root, focusing first on ♭2 versus 2 while keeping ♭5 fixed. Then build short studies over m7♭5 drones that resolve repeatedly through 2-♭3 and back to chord tones.

For improvisation, tie the mode to melodic minor function rather than isolated scale shapes. For composition, use it when you want half-diminished tension with slightly more melodic openness.