The members of No Doubt -- Gwen Stefani, Tom Dumont, Tony Kanal and Adrian Young -- reunited at FireAid Thursday night and sang some of their biggest hits, including "Just a Girl," "Spiderwebs" and "Don't Speak."

Highlights from the nearly six-hour Fire Aid included Lady Gaga, Billie Eilish, a female-fronted Nirvana reunion and an Anderson .Paak/Dr. Dre collab.

Donations can be made at fireaidla.org. Start the day smarter. Get all the news you need in your inbox each morning. So many musicians wanted to bring their spotlight to the cause, that what was initially set as a single event turned into dual concerts at the newly opened Intuit Dome and local landmark Kia Forum,

In the past few weeks, people have been planning many, many benefits for the victims of the recent Los Angeles wildfires. The biggest of those shows went down last night: FireAid, a gigantic all-star spectacular that took over both the Intuit Dome and the Kia Forum.

St. Vincent, Joan Jett and Kim Gordon joined Pat Smear and original Nirvana members Dave Grohl and Krist Novoselic onstage for a reunion of sorts at FireAid Thursday. Violet, Jett, and Gordon each subbed in for the late Kurt Cobain.

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.

A trio of singers filled in for Kurt Cobain as Dave Grohl, Pat Smear and Krist Novoselic performed "Breed," "School" and "Territorial Pissings.”

Just as FireAid hit the five-hour mark, Billie Eilish and her brother Finneas turned down the volume for an acoustic set as the night neared its end. Eilish had already made a cameo to set off the event earlier in the evening,

Stars including Billie Eilish, Pink, Katy Perry, Nirvana and Dr Dre performed at FireAid on Thursday, a benefit concert in Los Angeles to help the area recover from two of the largest fires in its history.

Actor Billy Crystal welcomed the crowd, wearing the clothes he had on when he escaped his home during the wildfires. He had lived in the Palisades for 46 years and spoke from the heart about losing his home. He revealed that Dublin band U2 donated $1 million to relief efforts.