Coraza literally means "shell" or "armor", referring to a protective covering. It's a word that evokes strength and resilience.
In this song, Alemán uses it in a metaphorical and intriguing way: "Es la coraza que late" (It's the beating shell/armor). This line suggests a tough exterior that still holds life and emotion, perhaps referring to the hardened but still beating heart of someone living a dangerous life. It's a powerful image that goes beyond its literal meaning, making it memorable and thought-provoking.
"Delivery" is a hard-hitting Mexican rap banger where Alemán teams up with Peso Pluma to lay out the gritty, relentless mechanics of cross-border smuggling. Right from the hook—"Mucho criminal, todo es coludido / Mandando los kilos para Estados Unidos" ("Lots of criminals, everyone is colluding / Sending the kilos to the United States")—they set a blunt, unfiltered scene. The title plays on the idea of shipping goods like an everyday postal service, except the packages moving north are illegal contraband that always arrives on schedule. Along the way, the track is packed with regional slang. When they drop "Culichi", they are talking about Culiacán, the capital of Sinaloa. The line "en el gaba" uses Mexican street slang (el gabacho) to refer to the United States, while calling customers "los güeros" ("the light-skinned folks" or "the blondes").
Beyond the logistics of moving weight by boat, plane, or car, the lyrics flex designer gear and lavish spending once a deal pays off. Alemán and Peso Pluma boast about outfits decked out in Fendi and Dior, cruising in Dodge Challengers, and splurging on wild parties in Cabo. There is also a cold, cynical realism about the trade itself. In one of the sharpest verses, the track points out the endless supply chain: "este negocio, si no lo hago yo, lo hará otro / Y después de ese cabrón, otro y otro" ("this business, if I don't do it, someone else will / And after that bastard, another and another"). It is boastful, street-smart rap that treats international smuggling like an unstoppable machine.