Chôros No. 9 is an orchestral work written between 1929 and 1942 by the Brazilian composer Heitor Villa-Lobos. It is part of a series of fourteen numbered compositions collectively titled Chôros, ranging from solos for guitar and for piano up to works scored for soloist or chorus with orchestra or multiple orchestras, and in duration up to over an hour. A recorded performance of Chôros No. 9 made by the composer lasts almost 28 minutes. History According to the score and the official catalog of the Museu Villa-Lobos, Chôros No. 9 was composed in Rio de Janeiro in 1929, and the score was dedicated in 1936 to Arminda Neves de Almeida. 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. 6 in the same venue by the same forces. The American premiere was given in Carnegie Hall, New York, on 8 February 1945, by the Philharmonic-Symphony Society of New York, conducted by the composer, who also directed the Orquestra Sinfônica de Córdoba in the Argentine premiere on 12 November 1946, at the Teatro Rivera Indarte, in Córdoba. 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. In her opinion, the delay of more than a decade between the nominal date of composition and that of the world premiere suggests that, although the score may have been begun or at least conceived in 1929, it was probably not completed until shortly before the premiere in 1942. 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. Instrumentation Chôros No. 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, , chocalho (metal and wood), xylophone, vibraphone, celesta, 2 harps, and strings. Analysis Chôros No. 9 is almost the twin of Chôros No. 6, with which it was concurrently composed. Both fall into clearly demarcated sections, alternating between