D# Locrian — Oud

D# Locrian is 7 notes to the octave (modes family), drawn here across the Oud's CFADGC courses with every D# marked, so home stays visible from anywhere on the fingerboard.

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.

Six courses tuned CFADGC give a scale plenty of room, but the honest caveat travels with every map here: maqam scales bend intervals a 12-position board cannot draw, so these positions are a reference grid, not the microtonal reality a taqsim actually plays. Every root is marked so the pattern never loses home even where the notation and the tradition part ways.

Play it as a reference, not a rulebook: the pattern gives you every 12-TET position the scale touches, but a maqam-trained ear will pull some of those tones a quarter step in performance. Learn the grid first, then learn where the tradition asks you to leave it.