Scale Maps — Puerto Rican Cuatro (Standard)

Twelve roots, 24 types — pick one and its map lights up B-E-A-D-G.

The Puerto Rican Cuatro (Standard) scale reference: choose a root and one of 24 types, and the notes arrive mapped across B-E-A-D-G with every root marked.

Five courses spanning a minor thirteenth give a scale room to breathe: three or four notes to a course in first position, and a top string clear enough that a melody can live there while the rest of the grip stays down. These maps light every root so a run knows where home is before it leaves.