Niebla literally translates to "fog" or "mist". It's a wonderfully atmospheric word that you don't hear in songs every day.
In this beautiful ballad, the line "Se aclaró aquella niebla" ("That fog cleared up") is used as a powerful metaphor. It represents the moment the character's long-held confusion and uncertainty finally vanish, replaced by the clarity of seeing the truth for the first time.
Listen to how Mexican singer Danna Paola and Chayanne turn a sudden burst of clarity into pure relief. At the start, both singers look back on their past as wasted time spent in confusion. Danna sings about hiding away with "Tiempo fue viendo al interior" ("Time was spent looking inward"), realizing she had blinders on to the rest of the world. Then Chayanne chimes in, admitting he spent years "en la oscuridad" ("in the dark") while chasing a lone dream. The turning point hits when they finally stop squinting into the distance and look at who is right in front of them: "Ella aquí, luce como estrella" ("Her here, she looks like a star").
The title hook, "Veo en ti la luz" ("I see the light in you"), pulls double duty here. It links romantic realization to actual visibility. When they sing "Se aclaró aquella niebla" ("That fog cleared up") and "Ahora el cielo es azul" ("Now the sky is blue"), the shift feels totally literal, as if bad weather rolled away just so they could see clearly. It is direct and sweet, showing that finding the right place with someone else can make an entire lifetime of doubt disappear on the spot.