Alpiste literally translates to "birdseed." It's an interesting and somewhat rare word to find in a song, especially one about a romantic relationship.
In the lyrics, the singer uses "alpiste" metaphorically to represent the meager affection or attention he received from his lover. He sings, "El alpiste que me dabas fue tan poco" (The birdseed you gave me was so little), highlighting the lack of nourishment in the relationship, even though he remained devoted like a bird in a cage.
In this emotional Latin pop classic, Cristian Castro slips into the feathers of a small sparrow that once surrendered its wings for love. Drinking from his partner’s hand and living off sparse birdseed, he sings of a devotion so complete that he forgot how to fly. The cage imagery captures a relationship where one lover held all the power, feeding out tiny doses of affection while the other gave everything, his song, his freedom, his heart.
The chorus transforms the sadness into an anthem of self-respect: Lo que un día fue, no será (What once was will not be). Realizing he deserves more, the singer turns down a late offer of love, urges his former captor to leave the door open for another unsuspecting bird, and sets his sights on a wider sky. The result is a bittersweet goodbye that celebrates reclaimed freedom, dignity, and the promise of a love that lets him truly soar.