NEW YORK (AP) — Before Rosalía became an international pop powerhouse, she was Rosalía Vila Tobella, a student of flamenco at the hypercompetitive Catalonia College of Music. There, she learned Spain's folkloric traditions. And then she broke away from them, bringing heritage performance into modern style.

On her fourth studio album, her sonic rebellions have come full circle. “Lux” is an offbeat, full-hearted embrace of her classical training through huge orchestral movements. It is also a demanding collection meant for keen listeners. That is accomplished with the use of 13 different languages, a phonetic miracle all performed by Rosalía. If there is a single avant-garde saving grace in the pop music landscape, it's here. It's maximalist, it's “Lux.”

The first taste of “Lux” was “Ber

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