Caduca comes from the verb caducar, meaning “to expire” or “to become no longer valid.” It is especially memorable because it is often used for food, documents, or deadlines, but here it describes a desire that never fades: “un deseo que nunca caduca” (“a desire that never expires”).
“Por Ti” is a flirtatious, openly sexual song about two people who cannot seem to stay away from each other. The narrator imagines her naked body on top of his and says, “tú y yo mezclamos en la cama como el agua con Haití” [you and I mix in bed like water with Haiti]. It is a playful comparison for how naturally they fit together. The repeated “así” [like that] works almost like a dance instruction, as he asks her to keep moving closer to him and not hold back. The phrase “voy por ti” [I’m coming for you] gives the song its direct, confident center.
The setting keeps getting more extravagant: first the bedroom, then a penthouse where rain comes through the window and the couple lies together. He says his desire “nunca caduca” [never expires], and after several rounds, he still wants more. Lines about a drink, smoking, dancing, and listening to a “concierto de gemidos” [a concert of moans] make the night feel loose and uninhibited. The lyrics are blunt and sometimes deliberately over-the-top, but that is part of the fun: this is a late-night fantasy built from movement, repetition, physical attraction, and the simple invitation to “déjate llevar” [let yourself go].