Diera is the imperfect subjunctive form of the verb dar (to give). While dar is common, this specific subjunctive form is less frequent and adds a layer of hypothetical desire or regret.
In the song, Vicente Fernández sings, "Yo qué diera por no recordarte" (What would I give to not remember you) and "Yo qué diera por no ser de ti" (What would I give to not be yours). This expresses a deep longing and a hypothetical wish to undo his feelings, making diera a poignant and engaging word choice.
Vicente Fernández's "Corazón Corazón" is a passionate plea from someone who can't imagine life without their love. He admits, "Es inútil dejar de quererte / Ya no puedo vivir sin tu amor" [It's useless to stop loving you / I can no longer live without your love]. He's practically begging, "No me quieras matar, corazón" [Don't try to kill me, heart].
It's a dramatic song where he reminds his beloved of their shared past, saying, "Recuerda el camino donde te encontré" [Remember the path where I found you] and "Recuerda un poquito quién te hizo mujer" [Remember a little who made you a woman]. But if she still decides to leave, he makes a heartbreaking declaration: "Te diré con el alma en la mano / Que puedes quedarte porque yo me voy" [I will tell you with my soul in my hand / That you can stay because I am leaving]. Talk about a mic drop!
Vicente Fernández grew up on his father's ranch outside Guadalajara, in Jalisco, and started out singing for tips on the street before signing with CBS México in 1966. His early records like "Perdóname" and "Cantina del Barrio" built his name, but it was 1976's "Volver, Volver" that turned him into a national phenomenon across Mexico and the wider Spanish-speaking world.
Fans came to call him "El Ídolo de México," and critics crowned him the King of Ranchera for his warm, aching tenor and the way he sang about heartbreak, betrayal, and rural life with equal conviction. He recorded well over a hundred albums across his career, including El Rey, Mi Querido Viejo, and a tribute record to songwriter José Alfredo Jiménez, and sold more than 70 million records before his death in 2021 at 81.