This performance is "Everything I Wanted"! Billie Eilish and her brother and collaborator Finneas took the 2021 Grammys stage for a moody performance of her hit single "Everything I Wanted," as ...

The singer, 34, was performing the Nashville emo outfit's 2009 track "All I Wanted," when she revealed Billie Eilish, 21, would be joining them on stage. “Please welcome our friend Billie Eilish ...