A Locrian — 8-Voice Polysynth

The A Locrian lit key by key — roots pinned, degrees named, audio ready.

A Locrian carries 7 notes per octave (modes family), drawn here straight onto the 8-Voice Polysynth's keys with every root pinned — no tablature in between, the keyboard is the map.

The most dissonant, unstable mode — the tonic chord is diminished (b5), making a true Locrian tonal center rare. Used for color and passing harmony.

Heard in: Metal riffs, jazz (half-diminished ø7 chords in ii°7 – V – i), horror and tension film scores.

The 8-Voice Polysynth answers touch, so practice these maps at more than one dynamic — the pattern is the same, but the hand that plays it soft and loud owns it twice.