F# Locrian on the Flamenco Guitar

Where F# Locrian lies on the fretboard of a guitar tuned EADGBE, and how a flamenco passage lands it on the count.

F# Locrian runs 7 notes to the octave, laid across an EADGBE fretboard with every F# marked — the pitch a phrase keeps coming home to.

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.

On the flamenco guitar a scale is the raw material of the falseta — a composed melodic passage the guitarist drops between sung verses — and of the runs a toque answers the cante with.

Whatever notes a passage runs through, it is measured in compás: it sets off and comes to rest where the count of the palo allows, so every scale here is finally heard against a cycle of accents.