Arrullo refers to a gentle, soothing sound, like a lullaby or the cooing of doves. In the song, “al arrullo de su plena juventud” poetically suggests that the two lovers’ happiness blossomed under the tender, comforting influence of their youth.
Pedro Infante’s “Luna De Octubre” begins with a lovely idea: October’s moon is the most beautiful because it reflects “la quietud de dos almas” [the stillness of two souls]. These are two young people who want to be happy together, held close by the gentle comfort of youth. The heart in the song has felt “el calor de una linda mujer” [the warmth of a lovely woman], and it has learned both how to love and how to suffer. There is no pretending that love is always easy. The singer has faced pain, yet now that life is beginning again, even yesterday’s cruel punishment seems to have died away when he thinks his love is being revealed.
Then comes the tender twist: he might leave, but he does not want to destroy the other person’s “risueña ilusión” [smiling dream] or the “sueños dorados” [golden dreams] they share. He explains that leaving is not simply a way to escape or stay far away. His love will continue with the same passion he felt from the day he first saw this person and dreamed, “que serías para mí” [that you would be mine]. The song holds two ideas together beautifully: a possible goodbye, and a love that refuses to disappear.