A maj9 Chord on Puerto Rican Cuatro
Play A maj9 on Puerto Rican Cuatro: diagrams, finger positions, intervals, and every voicing up and down the neck for this instrument.
The A maj9 chord is a major extended chord that stacks ninths, elevenths, or thirteenths over a major-seventh foundation for a rich, jazzy color. It is built from the notes A, B, C#, E, G#. This page shows how to play A maj9 on Puerto Rican Cuatro with clear fretboard diagrams and suggested finger positions.
The shape nearest the nut leaves the B and A strings open and takes the rest at fret 5, reaching across 2 frets. A falls on the E string. It sounds from A3 up to C#5.
Puerto Rican Cuatro is strung in five courses of two, the lower two paired an octave apart, so each stopped note here sounds as two — which is why the shape rings thicker than the same grip on a single-strung instrument.
Browse alternate voicings to find the one that sits best under your fingers, then compare it with the other chord types built on A or explore the same shape in nearby keys. The diagrams list the notes in each voicing so you can connect the shape to the theory behind it.