‘BbY WoW’ Is the Number One Song on the Planet. Judeline Can’t Believe It

For the last couple weeks, Karol G’s smooth club track “BbY WOW” has been gliding up the global charts, taking the number one spot on Spotify and the Billboard Global 200. The song is a streaming juggernaut, collecting 78 million Spotify listens and 37 million views on YouTube, and it just keeps getting bigger.

But Karol didn’t do it alone. When she was making the track, she enlisted the dreamy-eyed Spanish producer-artist Rusowsky and the enchanting Spanish singer-songwriter Judeline to sing with her. Judeline was an especially important addition since she was one of Karol’s most trusted collaborators when she was working on No Me Arrepiento de Sentir Tanto , the album “BbY WOW” appears on. Judeline helped write the smash and has credits on three other tracks, including “Matadora,” “Te Llevas To,” and “Final Feliz” — but she admits she didn’t see what a colossal hit “BbY WOW” would become.

“I didn’t expect it at all,” she tells Rolling Stone on a recent call from Spain. “I knew it was going to go well because obviously, the exposure Karol has is huge. But I think what’s really lovely is that no one knows what song is going to connect most with people, so we’ve been celebrating.”