It was given its first performance on 15 July 1942 in Rio de Janeiro by the Orquestra Sinfônica do Theatro Municipal, conducted by the composer, just three days before the premiere of Chôros No.

[1] However, Lisa Peppercorn casts doubt on such an early date of composition, based on the fact that it was Villa-Lobos's habit to secure premieres of his works as soon as they were completed.

[2] Based on his detailed analysis of the score, Guilherme Seixas agrees with Peppercorn's hypothesis, concluding that stylistic considerations also do not support a date of completion as early as 1929.

9 is scored for a large orchestra consisting of piccolo, 2 flutes, 2 oboes, cor anglais, 3 clarinets, bass clarinet, 2 bassoons, contrabassoon, 4 horns, 4 trumpets, 4 trombones, tuba, timpani, tam-tam, bass drum, tambor, tambor surdo, camisão (large and small), pio, triangle, reco-reco, tartaruga, caxambu [pt], chocalho (metal and wood), xylophone, vibraphone, celesta, 2 harps, and strings.

9 are relatively short, and tend to be simply repeated, while at the same time there is a complex interrelationship amongst these motives, recalling the Chôros actually composed in the 1920s.