Apiadas comes from the verb apiadarse, meaning 'to take pity' or 'to have mercy'. It's a less common verb than others for expressing emotion, making it stand out.
In the song, the singer is questioning why someone would show him mercy after all his mistakes, singing, "Con qué sentido te apiadas de mí" (With what sense do you take pity on me?). This word adds a layer of vulnerability and introspection to the lyrics, highlighting the singer's surprise at receiving compassion.
Have you ever had an ex suddenly reappear, leaving you totally confused? That's exactly what Rodrigo Tapari is singing about in "Acá Me Tenés (En Vivo)". He's really questioning why this person is back, especially since he was just starting to forget them! He sings, "No sé por qué viniste a buscarme a mí / Si hace tiempo que ya te perdí / Y justo ahora te estaba olvidando" [I don't know why you came looking for me / If I lost you a long time ago / And just now I was forgetting you].
He's pretty blunt, asking what this person even wants. Is it forgiveness, or are they just here to cause more trouble? He wonders, "Decime si viniste a buscarme / O qué es lo que querés / Si acaso vos viniste a destrozarme / Acá me tenés" [Tell me if you came looking for me / Or what do you want / If you came to destroy me / Here I am]. It's like he's saying, 'Alright, I'm here, do your worst!' It's a really relatable song about the messy feelings that come with an ex unexpectedly showing up again.