The Warning: Mexico’s Power Trio That’s Redefining Rock
It always starts small. A garage, a couple of instruments, maybe a hand-me-down amp buzzing in the background. For three sisters in Monterrey, Mexico, it started with a video game.
Daniela, Paulina, and Alejandra Villarreal grew up playing Rock Band—plastic guitars, fake drums, and flashing colors on a screen. But unlike most kids, they didn’t stop there. They wanted the real thing. Guitars that cut like lightning, drums that rattled walls, basslines that hit in the gut. Out of that hunger, The Warning was born.
A Viral Spark
The world first noticed them in 2014, when a shaky YouTube video of three teenage girls tearing through Metallica’s “Enter Sandman” hit millions of views. The comments were filled with disbelief—how could kids sound like this? Even Metallica’s own Kirk Hammett took notice: “The drummer kicks maximum ass!”
For most viral stars, that’s where the story ends. For The Warning, it was only the ignition switch.
Growing Beyond the Screen
Instead of cashing in on the novelty of being “the sisters who covered Metallica,” The Warning doubled down on being a real rock band. They launched a GoFundMe to record their first EP Escape the Mind, which landed them on The Ellen DeGeneres Show. Ellen, impressed, handed each sister $10,000 to attend summer sessions at Berklee.
They didn’t just take the opportunity—they absorbed it. The music grew darker, heavier, sharper. By the time their debut album XXI Century Blood dropped in 2017, it was clear these sisters weren’t a gimmick. They were the real deal.
Finding Their Own Voice
Their follow-up, Queen of the Murder Scene, was a concept album soaked in drama, revenge, and gothic imagery—showing that The Warning weren’t afraid to write their own stories. Then came international tours, festival slots, and the kind of reputation you don’t build overnight: the reputation of a band that earns its stage time.
And unlike many polished industry products, The Warning stayed in control. They wrote their own songs, played their own instruments, and refused to let anyone box them in as “just” an all-girl novelty act. They were a rock band. Full stop.
Why The Warning Matters
In a genre often obsessed with nostalgia, The Warning feels like a glimpse of the future. They’re a reminder that rock isn’t dead—it’s just being reborn in unexpected places. Three young women from Monterrey picked up real instruments when everyone else was chasing digital shortcuts, and they’re now headlining festivals, opening for legends, and turning heads worldwide.
Their latest album, Keep Me Fed (2024), balances raw heaviness with experimentation, delivering songs in both English and Spanish. It’s proof they’re not just surviving in rock—they’re pushing it forward.
🎧 The Warning Starter Kit
If you’re new to The Warning, here are four tracks that capture their fire, range, and evolution:
1. “Survive” (Queen of the Murder Scene, 2018)
Their rallying cry. Urgent, defiant, and unforgettable — this is the sound of three sisters proving rock is still alive.
2. “Narcisista” (Error, 2022)
A Spanish-language powerhouse — snarling riffs and social commentary collide in one of their heaviest moments.
3. “Evolve” (Error, 2022)
A darker, sharper track that shows how far they’ve come from their viral beginnings.
4. “Qué Más Quieres” (Keep Me Fed, 2024)
Bold, bilingual, and brimming with attitude — their latest chapter, and proof that the future of rock speaks many tongues.
👉 Spin these back-to-back and you’ll hear why The Warning aren’t just a novelty or a viral flash — they’re the real deal, carving out a space in modern rock that’s entirely their own.
A B-Side Note
For us at Hidden Gems, The Warning’s story connects deeply with the spirit of the B-side. They didn’t take the easy route. They didn’t settle for the single everyone expected. They dug deeper, found their own voice, and put out songs that may not always be mainstream hits—but hit harder because they’re authentic.
Rock’s future doesn’t look like its past. It looks like three sisters from Monterrey, thrashing their instruments with grit, grace, and zero apologies.
👉 If you’ve never heard them, start with their track “Survive” from Queen of the Murder Scene, then spin “Qué Más Quieres” off Keep Me Fed. It’s the sound of a band carving their name into rock’s long, loud history.

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