Rosalía trained with a professional ballerina to prepare for the choreography on her Lux tour. She appeared to sing all of "Reliquia" on her toes while shadows of orchestral musicians fell across a white curtain behind her. For "Magnolias," the 18th and final song on the album, she sang in the rain, dressed in white, against a dark backdrop.

Lux came out last November and reached the top spot in several countries. Rolling Stone gave it five stars and wrote that it "sounds like absolutely nothing else in music right now, and it's an album no other pop star could have made." The review called it her most astonishing offer yet, following 2022's Motomami and El Mal Querer four years before that.

The hour-long, four-movement album ties classical sounds, opera references and 14 different languages together. Rosalía, 34, said the songs grew out of learning about saints. Her family is Catholic, she told Billboard, but she found a shared theme across many religions: not fearing.

Her takeaway fits in one line: "We might think that we're different, but we're not."