Desencadeno comes from the verb desencadenar, which literally means 'to unchain,' from the root word cadena (chain). It's a powerful and dramatic word for unleashing something.
In the song, Alvaro Soler sings, "Contigo me desencadeno" (With you, I unleash myself). He uses this word to describe breaking free from his inhibitions and unleashing his true, powerful, inner 'animal', all thanks to the strength someone gives him.
Alvaro Soler's "Animal" is a high-energy anthem about unleashing your inner strength for someone you care about. He sets the scene for a big moment, a fight or a challenge, where he's going to give it everything he has. He sings, "Hoy lucharé como un animal" (Today I will fight like an animal), comparing his determination to the power of a lion. It’s a song that tells you to turn your imagination into reality because there are no limits.
But this isn't just about fighting for himself. He's dedicating this struggle to a specific person who is both his anchor and his inspiration. He says, "En mi bandera llevo el alma / Amarrada por mi calma / Mi calma eres tú" (On my flag I carry my soul / Tied by my calm / You are my calm). This person helps him stay grounded, but also helps him get "desencadenado" (unleashed). He makes it clear that if he wins, it's because of them and their friendship: "Si hoy voy a triunfar / No voy olvidar / Que por ti será" (If today I am going to triumph / I will not forget / That it will be because of you).