C# Phrygian — Cuban Tres

C# Phrygian is 7 notes to the octave (modes family), drawn here across the Cuban Tres's GCE courses with every C# marked, so home stays visible from anywhere in the pattern.

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.

Three courses tuned GCE put a scale in a narrow, honest place: two or three notes to a course, no spare strings to hide on, and the G course sounding above the C beside it — so a run that looks like it descends on paper can rise under the fingers. These maps mark every root so the figure never loses home.

Practise it as a figure, not a ladder: pick four of its notes, loop them as a two-bar phrase against a slow pulse, then slide the same phrase to the next position. That is how this instrument actually uses a scale — as raw material for a repeating line.