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

Short, repeatable drills with tab and playback, generated from the Puerto Rican Cuatro (Antiguo A-D-G-C-F)'s own A-D-G-C-F geometry: an evenness drill for the striking hand, string-crossing accuracy, and a chromatic run for the fretting hand. Nothing here is transcribed — each drill is computed from this instrument's open pitches, so every crossing follows the open strings up in the order they really climb, with no folded pair to step around.

Doubled courses are the reason to practise slowly. Two strings tuned to the same note expose every fault in the striking hand at once: hit them unevenly and you get a flam, hold them unevenly and you get a buzz. Play to a click, and let both strings of every course speak before you add any speed.