Necio translates to "foolish" or "stubborn." It's a word that carries a strong emotional weight, describing someone who is not only foolish but also obstinate in their ways.
In the song, KHEA uses necio to express his regret and self-blame, singing, "Me trataste como un necio / No sabía el precio pero tú sí / Qué necio fui." He realizes he was naive and foolish in love, highlighting a moment of profound self-reflection and vulnerability.
KHEA wrote "Sin Corazón" about someone who took everything and gave nothing back. He opens with how they met, "La conocí donde sobran penas y falta amor" [I met her where sorrows abound and love is lacking], and admits he was young and naive, "Tan inocente, yo era menor" [So innocent, I was younger]. He thought a kiss meant everything; it turned out to mean nothing. "Que vino sin corazón" [She came without a heart] is the line the song is named for, and it lands as a verdict, not a complaint.
The chorus keeps asking the same question: "Ay, mi amor, ¿qué más querés de mí?" [Oh, my love, what more do you want from me?] "Si todo te lo di" [I gave you everything]. It repeats because that is what heartbreak sounds like, the same sentence over and over, waiting for an answer that never comes. Midway through, KHEA breaks from the relationship to talk about the grind that got him here, "Sigo con el hambre desde el primer concierto" [I still carry the hunger from my first concert]. Both halves of the song share one warning: people will want a cut of what you built, or the version of you that flatters them, and neither one deserves your loyalty. "No le des la espalda" [Don't turn your back on it] closes each verse like advice he wishes someone had given him first.