Locrian ♯2 keeps the unstable core of Locrian but replaces the flat second with a natural second, creating a more playable and less compressed minor-diminished sound. It still carries the characteristic ♭5 and ♭7, but the raised second opens melodic space. This balance makes it useful in modern jazz harmony and modal minor contexts.
Construction and formula
Locrian ♯2 follows 1-2-♭3-4-♭5-♭6-♭7, with step pattern W-H-W-H-W-W-W. In C Locrian ♯2, the notes are C-D-E♭-F-G♭-A♭-B♭. In modal terms, it is the 6th mode of melodic minor (for example from E♭ melodic minor).
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.
