 Perhaps inspiration for the unobtrusive ostinato accompaniment came from de Falla's lullaby "Nana" in his "Siete canciones populares españolas" of 1914–15, drawn from the Andalusian tradition.Whereas Ginastera's lullaby is ABA with exact ostinati in the A sections, de Falla's is twenty measures of rhythmically identical ostinato with only slight chromatic shifting.In the arpeggios of the B section of "Arrorró," one sees the influence of Debussy’s piano music, comparable, for example, to the left hand of "Beau Soir."