Billie Eilish and her brother Finneas O’Connell received the Oscar for Best Song for “What Was I Made For?” which they co-wrote for the Barbie movie soundtrack.

 Billie Eilish and Finneas O’Connell win the Oscar for Best Original Song. 

Eilish and O’Connell had to fight a lineup that included another Barbie song, I’m Just Ken, written by Mark Ronson and Andrew Wyatt and performed by Ryan Gosling. Other contenders included Killers of the Flower Moon’s Wahzhazhe (A Song for My People) and American Symphony’s It Never Went Away.

 What Was I Made For?, a No. 1 hit in the UK and Australia and No. 14 in the US, soundtracks a scene in the film in which Barbie (Margot Robbie) encounters the soul of her creator Ruth Handler (Rhea Perlman). It won Best Song of the Year and best music written for Visual Media at the Grammy Awards in February.

“I feel so incredibly lucky and honored,” said Eilish, dedicating the award to “everyone affected by the movie and how incredible it was.”

She also thanked her best friend, Zoe, “for playing Barbies with me” as well as two music teachers, one of whom “didn’t like me but you were good at your job”.