Audiences tuning into the FireAid benefit concert for Los Angeles on Thursday night (Jan. 30) were surprised with an early treat when pop superstar Billie Eilish made a surprise appearance alongside Billie Joe Armstrong and the rest of Green Day for a stirring opening performance.

A lineup of A-list artists is set to perform in the FireAid concert on Thursday, Jan. 30, benefiting the victims of the deadly Los Angeles wildfires . Billie Eilish, Olivia Rodrigo, Lady Gaga, Jelly Roll, and Stevie Wonder are some of the mega stars slated to take the stage.

Billie Eilish joined Green Day on 'Last Night on Earth' to kick off the FireAid concerts in Los Angeles to benefit wildfire relief in the city.