According to the official account, the Introdução aos Chôros was composed in Rio de Janeiro and Paris in 1929.

[1] The work is scored for solo guitar (amplified) and an orchestra consisting of 2 piccolos, 2 flutes, 2 oboes, cor anglais, 2 clarinets, bass clarinet, alto saxophone, 2 bassoons, contrabassoon, 4 horns, 4 trumpets, 4 trombones, tuba, timpani, tam-tam, cymbals, xylophone, celesta, 2 harps, piano, and strings.

The work has the form and function of a traditional symphonic overture, anticipating the themes and other aspects of the music that is to follow.

The work ends with the solo guitar, against a soft and soothing background, playing a free cadenza that prepares for the following entrance of Chôros No.

1, "which is like the essence, the embryo, the psychological model that will be developed technically in the conception of all the Chôros".