Un x100to (with Bad Bunny)

"Un x100to" is a goodbye disguised as a party, and that tension is its genius. Grupo Frontera built it on norteño-cumbia bones — the lilting accordion, the rolling bajo sexto, the bouncy *redova* rhythm that makes Texas-Mexican dancehalls sway — then Bad Bunny walks in and bends the whole thing toward his melancholy reggaeton instincts. The title is wordplay: "un por ciento" rendered as "x100to," the one percent of battery left on a phone, the last sliver of charge before a final desperate text to someone already gone. That image — staring at a dying screen, debating whether to send it — anchors the entire song's ache. Frontera's lead vocal is plaintive and clear, the boy-band sweetness of the genre's new wave; Bad Bunny's verse arrives looser, sadder, his half-sung Caribbean cadence rubbing against the norteño grain and somehow fitting perfectly. The collision became a cultural event in 2023: the biggest artist in the world legitimizing a Texas regional band, the música-Mexicana boom and reggaeton's empire shaking hands. You dance to it and only later notice you're dancing to heartbreak. Put it on at a backyard *carne asada*, a wedding, a crowded kitchen — it will fill the room, and then it will quietly gut the one person there who just lost someone.