In Un Clásico, Spanish pop star Ana Mena turns the chaos of a flirty, no-strings romance into a stadium-sized spectacle: everyone warns the boy about her party-girl reputation, yet he still slides into her DMs, sparking an attraction so electric that her heartbeat becomes "erratic" and every street encounter feels like a high-stakes soccer derby, el clásico. Between playful nods to Fifty Shades, sarcastic shout-outs to an "ex galáctico," and confessions that their passion is both a “beautiful disaster” and doomed to fade, the song captures the rush of modern love—fast, addictive, unpredictable, and destined to end with both players walking off to new matches, still replaying the highlights in their heads.