Sonreirás means "you will smile" (future tense). It's a beautiful and hopeful word that immediately draws you into the song's emotional landscape.
In the context of the song, the singer is reflecting on a past love, imagining the person smiling, perhaps with someone new. This word captures a bittersweet longing and the enduring image of a loved one's happiness, even if it's no longer shared with the singer.
Il Volo's operatic tenors turn a breakup into a slow-motion collapse. The song opens mid-scene, still holding onto an old image — "Tal como en mi memoria estás" [Just as you are in my memory] — before watching that person smile at someone new: "Tú sonríes y más te acercas a él" [You smile and get closer to him].
The chorus keeps circling the same question, "Quién me dice que volverás" [Who tells me that you'll return], until the narrator admits the hope is gone: "Ya no creo más" [I don't believe it anymore]. By the bridge, distance hasn't helped either: "Me pierdo en cada ciudad, y no te sé olvidar" [I get lost in every city, and I don't know how to forget you]. The song ends on a single word, "Él" [Him] — the man who's still there.