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

Every key's diatonic chords, charted as real Puerto Rican Cuatro (Antiguo A-D-G-C-F) grips. Pick a key below and its chord family arrives on A-D-G-C-F, ready to put behind a singer, under a melody instrument, or on its own.

A key here is worth learning as a set of hand positions rather than a list of names. On an A-D-G-C-F neck whose open strings spell F major pentatonic, the same roman numeral tends to land in the same region every time, and that regularity is most of what makes fast changes possible.