The cuatro is the national instrument of Puerto Rico. It belongs to the lute family of string instruments. The cuatro of Puerto Rico has ten strings in five courses, tuned from low to high B-e-a-d"-g", 54321, with B and E in octaves and A, D and G in unisons.[1] A cuatro player is called a cuatrista.Cuatros are two distinct Latin American instruments one from Puerto Rico and the other from Venezuela.The one offered is for Puerto Rican music.Cuatros are used to play jibaro music, salon genres, salsa, pop, rock, classical, jazz, and even American bluegrass and many more styles.