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 had some surprises in store, but none bigger than the first reunion from Nirvana's surviving members in over a decade.

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.

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

After the devastating LA wildfires, many benefit concerts are popping up. We’re sponsoring one in Zebulon next month that has Rocket, Draag, and RAM. FireAid — which has Lady Gaga, Billie Eilish, Red Hot Chili Peppers,

At FireAid on January 30th, Nirvana performed a surprise reunion with the help of guest singers Joan Jett, Kim Gordon, St Vincent and Violet Grohl.

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

Astros del pop, socorristas, rockeros y aquellos que lo han perdido todo en los devastadores incendios del área de Los Ángeles se unieron para FireAid, un enorme concierto benéfico el jueves que

Billie Eilish, Dr. Dre, Stevie Wonder, Green Day, Joni Mitchell, No Doubt and the remaining members of Nirvana all performed.

Happy New Music Friday! The weekend is here, which means more streaming, new playlists and the best that music has to offer -- and ET has you covered for everything in between. Music's Biggest Night is this weekend!