Arrulla comes from the verb arrullar, which means 'to lull' or 'to coo', and it is often associated with singing a gentle lullaby.
In this romantic track, Luis Fonsi sings, "Tu suspiro una canción que me arrulla como el viento" (Your sigh is a song that lulls me like the wind). He uses this evocative word to describe how his partner's simple breath brings him a deep, soothing sense of peace and comfort.
This is a beautiful song about how one person’s arrival can completely change your world for the better. Luis Fonsi describes his life as being in a dark place, singing about finding this person "Al instante en que se fue la luz" (The moment the light went out). But then, "Llegaste tú" (You arrived), and everything was transformed.
He feels like the "hombre más afortunado" (luckiest man) in the world. This person's presence is a cure and a comfort; he says "Mi cura es tu abrazo" (Your hug is my cure). His love for them is so complete that he feels he carries "el cielo dentro de mí" (heaven inside of me). It's a powerful and sweet declaration of how love can bring light back into your life.