Fronteando is slang for showing off, boasting, or flaunting your status, often through expensive possessions. In the song, J Balvin says "Sigan fronteando con carros" ("Keep flexing with cars"), contrasting other artists’ flashy displays with his own success and longevity.
J Balvin took Metallica's road song for The Metallica Blacklist and turned it into a victory lap. He opens by counting the years: "Ya son más de diez años metiéndole" (It's been over ten years going hard), "Y todavía sueno como nuevo" (And I still sound brand new). Then he gets cocky about the rivals who came and went, "Tú sonaste, te apagaste" (You blew up, then you faded out), and points out he has never betrayed his crew while he was at the top or at rock bottom.
The hook is a short chant built on rhymes: "Cada día más caro" (Pricier every day) and "Sigo siendo un descaro" (I'm still shameless). His verses are full of Colombian street slang, with a sly joke about being in "modo fit" (fit mode) while carrying weed in his suitcase, and a nod to Pablo Neruda as he writes his own story. At the end Metallica's original chorus comes in, in English, "Where I lay my head is home", which is a fitting line for a guy who spends half the song on a plane.