G Major — Puerto Rican Cuatro (Standard)

G Major mapped on B-E-A-D-G, home lit wherever it falls, with playback.

G Major is 7 notes to the octave (common family), drawn here across the Puerto Rican Cuatro (Standard)'s B-E-A-D-G strings with every G marked, so home stays visible from anywhere in the pattern.

Bright, resolved, and stable. The foundation of Western tonal music and the most common mode in pop, classical, folk, and jazz.

Heard in: Pop, classical, country, folk, gospel — the default major tonality of Western music.

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.

Work it in one position before you work it up the neck. The doubled courses forgive nothing: a fret held half a millimetre short buzzes on one string of the pair and rings on the other, and that difference is audible long before the run is fast.