"From the bottom of our hearts, we love you Los Angeles," Billie Joe Armstrong told the crowd, "and we've got your back no matter what"

The first of two concerts collectively being referred to as FireAid kicked off at the Kia Forum in the Los Angeles city of Inglewood, to support relief efforts in the wake of the deadly wildfires that ignited earlier this month in the LA area, claiming 29 lives and causing billions of dollars in damage.

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.

Green Day and Billie Eilish kicked off the massive FireAid benefit concert Thursday night, a two-venue concert extravaganza that is raising money for Los Angeles-area wildfire relief efforts. FireAid

Billie Eilish and her brother Finneas performed three 'Hit Me Hard and Soft' songs at the FireAid benefit concert in Los Angeles. Get the details.

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

The massive LA wildfire benefit concert FireAid is happening in Inglewood right now at both the Intuit Dome and Kia Forum. At the latter, the night is starting off strong with Billie Eilish joining Green Day for 21st Century Breakdown’s “Last Night On Earth.

Green Day and Billie Eilish kicked off the massive FireAid benefit concert Thursday night, a two-venue concert extravaganza that is raising money for Los Angeles-area wildfire relief efforts. FireAid

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.

Nirvana, Lady Gaga, Billie Eilish, Green Day, Stevie Nicks, No Doubt and more performed at the Los Angeles benefit concert FireAid.