Billie Joe Armstrong and Billie Eilish. Green Day got things started at the Kia Forum, where they surprised fans with Eilish to help them perform, "Last Night on Earth" from 2009's 21st Century Breakdown.

The star-studded gigs were held simultaneously at the Intuit Dome and Kia Forum in Inglewood, California to help raise funds for the communities impacted by the wildfires that devastated the state earlier this month.

U2, whose members include Bono and the Edge, committed during the event to donating $1 million to the relief efforts. Steve Ballmer, former Microsoft CEO and current owner of the Los Angeles Clippers, and his wife, Connie, also pledged to match that donation and all donations made during the live broadcast of FireAid.

The FireAid benefit was fueled by some of music’s best performers to raise money for Los Angeles-area wildfire relief efforts.

Billie Eilish joined Green Day for a performance of the band's song "Last Night on Earth" at the FireAid benefit concert on Thursday. Get details.

Billie Eilish, Lady Gaga, Stevie Nicks, Olivia Rodrigo and more performed for the FireAid Benefit Concerts for wildfire relief in Los Angeles on Thursday, Jan. 30. See the best photos from the shows here.

Inglewood's Intuit Dome and Kia Forum will host two massive concerts on Thursday night for a night of music and solidarity following the devastating LA wildfires.

The all-star FireAid benefit in Los Angeles began with Green Day and Billie Eilish teaming up for the 'American Idiot' deep cut "Last Night on Earth."

Pop stars, first responders, rock musicians, and wildfire survivors gathered for FireAid on Thursday night, a benefit concert to raise funds and share.

Billie Eilish delivers a heartfelt duet with Green Day for the Los Angeles FireAid concert. Read on to know the details.

The show, which will take place at the Intuit Dome and Kia Forum in Inglewood, counts Billie Eilish, Lady Gaga, Olivia Rodrigo and Green Day among the many headliners.

FireAid, a star-studded benefit concert raised millions for LA wildfire victims. The event featured emotional performances, including a surprise Nirvana reunion, Lady Gaga debuting a new song, and Billy Crystal hosting with humor.