It is a two-voice canon, utilizing a pentatonic scale (A-C-D-E-G) with A as its central tone. The use of the pentatonic scale is sometimes associated with the "indigenous flute" (likely a quena) that Ginastera is said to have played in his childhood. In an interview conducted in the 1980s, Ginastera explained his use of the pentatonic scale as "a return to a primitive America, like the Mayan, Aztec, and Inca civilizations." Herein, a glimpse of his Pan-American stance, which would be developed in later works, can be observed.