Calando comes from the verb calar, which means to penetrate, soak, or sink in. It's a less common word in everyday conversation, making it stand out in the lyrics.
In this song, the artist sings, "Sigue calando el no tenerte por aquí" (The pain of not having you here keeps sinking in). It beautifully conveys the persistent and deep emotional impact of absence, suggesting a pain that continues to permeate his being.
Diferente Nivel's "Confieso" is a really honest song about not being over someone. The singer admits, "Confieso que aún no estoy preparado" [I confess that I'm still not ready], showing that even though time passes, the pain of losing this person hasn't gone away. He says, "Los días pasan, pero no pasa el dolor" [The days pass, but the pain doesn't pass], which is such a relatable feeling when you're heartbroken.
What's interesting is how he pretends to be okay. He mentions, "Tal vez me miras que sonrío entre la gente / Me he vuelto experto en eso de fingir" [Maybe you see me smiling among people / I've become an expert at faking it]. It's like he's putting on a brave face for the world, especially when he sees the other person looking "tan campante" [so carefree]. But deep down, he confesses, "No he aprendido a vivir sin ti" [I haven't learned to live without you]. It's a raw look at trying to move on but still being stuck in the past.