Billie Eilish sweeps the stage at a concert that crowns her the absolute queen of Generation Z.

On March 9th, a very young Billie Eilish, barely 16 years old, performed for the first time in Barcelona at a Sant Jordi Club packed with young women enamored with the new teen pop phenomenon, whose novelty was that it was darker, more original, stranger than usual. Thus began a love story that six months later transformed her into an intergenerational phenomenon with a sold-out Palau Sant Jordi. Yesterday, she returned to the scene of the crime with her "Hit Me Hard and Soft" tour, consolidating her position as a true diva of the new era of pop, and she did not disappoint. Joyful, very young, and veteran all at the same time, she spread her enthusiasm to some twelve thousand people who chanted her name nonstop.

"Billie!" they shouted enthusiastically, as two technicians dragged a large sound box onto the stage, centered on the dance floor. Was she in there? Apparently so. Then the lights went out and a huge cube began to rise, revealing Billie at the top. The sound was atrocious, and her voice indistinguishable , but the audience sang along. "Chihiro," from her latest album, was the track that lit the fuse, and boy did it light it; the roar was enormous. The audience couldn't stop singing the lyrics or screaming every time the artist jumped around the stage.

"Lunch" was the next track in the set, set against a red and blue backdrop. The sound was weighing down her performance, but no one cared in the slightest. The floor was playing Billie. The screens on the ceiling were playing Billie. And she was moving and everywhere, in one of those 360-degree stages that force artists to involve everyone. And she succeeded. And she couldn't stop laughing, grateful for the euphoric response of her audience.

Dressed in her now-trendy baggy shirts with a huge size 38 print and her cap backward, she began to sing "NDA" while the stage spewed bursts of fire . This girl's charisma is out of this world. "How are you? I love you so much," she said before launching into her first ballad, "Wildflower." It was hair-raising, until she sat down center stage and asked everyone to be quiet for a minute so she could record her voice, sequence it, and create layers upon layers until she created a Billies-like polyphony. Of course, everyone complied, demonstrating this artist's power of persuasion. To conclude this segment, another highlight of the show, with "When the party's over," with the singer lying on the floor.

Sometimes it was scary to look out at the audience and see everyone with their phones up recording her, but that's how it is these days. The truth is, every song felt like an event. Billie Eilish fans are huge fans of Billie Eilish. With "Diner," the dark, bizarre singer returned, reaching her peak with "Bad Guy," the song that made her a megastar. Recording herself and her band with a cell phone, the audience couldn't stop jumping to one of the strangest hits of recent years.

The tender and sentimental "The Greatest" lifted Billie once again to the heights, as if she were on a giant swing. Here, not even the audience could silence her powerful voice. "These are difficult times all over the world, especially in my home of Los Angeles, and I wanted to send love to everyone suffering," she said before launching into an acoustic set with her two backing vocalists. "Skinny," a song that clearly touches her deeply, had everyone in tears. Until "Bury My Friend" once again raised the temperature in the room.

Thus concluded the first part of the show, with the electronic madness of "Oxytozin," urging the audience to bend down and jump as high as they could afterward. And they obeyed, of course, until Charlie XCX appeared on the screens to sing her collaboration with Billie Eilish on "Guess." The singer suddenly appeared on a new, smaller stage to dance and jump on a night that Sónar fans couldn't see, and boy did they miss it.

The concert closed with Billie Eilish sitting at the piano playing the songs that made her famous, such as the moving "Ocean Eyes," with images of waves flashing across the screens, as expected. Finally, the delicate "What Was I Made For," from the "Barbie" soundtrack, and "Birds of a Feather," proving that Generation Z has a queen, and her name is Billie Eilish. If anyone wants to know why the Beatles couldn't hear themselves live, they just have to come see the Californian singer in concert 60 years later.