It’s the song everyone can’t stop singing.

Billie Eilish won the Song of the Year award at the 2020 Grammys at the Staples Center in Los Angeles, Calif. on Sunday, scoring the award for her hit single “Bad Guy.”

The 18-year-old took the stage with her brother Finneas O’Connell, 22, who co-wrote the song.

“This is for all the kids who make music in their bedrooms,” he said.

The sibling duo wrote and recorded all their tracks at their home.

Earlier in the night, Eilish took the stage, accompanied by her brother on keys and backup vocals, for a performance of “When The Party’s Over” off her debut album, “When We All Fall Asleep, Where Do We Go?”

“Bad Guy” is just one of six nominations for the gothy artist’s hit record. By the way, “Bad Guy” hit No. 1 on the Billboard Hot 100, as did every other track on the album.

The pair scored their win over Lady Gaga, Tanya Tucker, H.E.R., Taylor Swift, Lana Del Ray, Lewis Capaldi and Lizzo.