G Gypsy Minor — Puerto Rican Cuatro (Antiguo A-D-G-C-F)

G Gypsy Minor is 7 notes to the octave (world family), drawn here across the Puerto Rican Cuatro (Antiguo A-D-G-C-F)'s A-D-G-C-F strings with every G marked, so home stays visible from anywhere in the pattern.

Harmonic minor with a raised 4th — two wide, yearning steps (b3 to #4, b6 to 7) give it a smoldering, theatrical intensity. Dark, exotic, and full of drama.

Heard in: Hungarian and Romani folk, Liszt's Hungarian Rhapsodies, gypsy jazz, klezmer, and neoclassical metal.

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.