«Dulce Sueño» is a lullaby inspired by the poem of the same name in the book «El Precio del Silencio» by the Spanish writer Ana Esmeralda P. Recuenco,
In this poem a mother, who has managed to kick a false and aggressive man out of her life, sings peace of mind to her little baby, because everything is over, both of them can live in peace now.