A Phrygian on Guitar

A Phrygian runs 7 notes to the octave. Below it is mapped onto this instrument's E–A–D–G–B–E fretboard with every A marked, because what a player needs mid-number is not the pattern but where the root is when the harmony moves under it.

Very dark minor with a half-step above the tonic. Spanish, Flamenco, and metal flavor — exotic, tense, and mysterious.

Heard in: Flamenco, metal, dark film scores — Carlos Santana solos, Joe Satriani's "War", Moorish and Andalusian music.

Scale work in the armonía is for the passing figure that joins one chord to the next — a few notes at the seam of a change, played by one member while the other keeps the pattern intact.

Take it slowly against the playback until the geometry stops being geometry, then put it under a number in A minor and let the written line pick its own notes out of it.