Billie Eilish and her brother and co-writer Finneas O’Connell discussed the changing world of music and the unexpected success of their hit “Bad Guy” for Variety‘s latest cover story.

“I don’t think we ever thought [“Bad Guy”] was ever going to be huge,” Eilish admitted.

O’Connell added, “I started to realize it was a really big song when it was in parodies on late night [talk shows]. James Corden was singing it. I was like, ‘Oh, this is having a cultural moment.’ When we wrote the song, I was picturing playing it as the opener at Coachella.” He noted, “Britney [Spears] danced to it.

Read Variety’s full cover story on Eilish here.