Actor Miles Teller, who lost his Pacific Palisades home in the fires, came to the stage to thank first responders and introduce Chad Comey, another community member who was directly affected by the natural disasters.

"We lost our residence, but we didn't lose our resilience," Comey said. "We will persevere."

Among the items Comey lost in the fires: a drumstick from the band Green Day. Teller surprised Comey with a gift from the band's drummer, Tré Cool, who joined them onstage.

The Red Hot Chili Peppers, who formed in L.A. in the ’80s, kicked off their set with some of their most notable hits, including “Dani California" and "Californication."

“Los Angeles is our home, we f-----g love you,” Flea, the band’s bassist, said.

Before the event kicked off, a handful of performers walked the red carpet to talk about why they participated tonight. Watch the video below.

Lil Baby took the stage to perform “So Sorry" and “Emotionally Scarred.”

He thanked first responders and firefighters, saying his "heart goes out" to those affected by the L.A. wildfires.

Dave Grohl, Krist Novoselic and Pat Smear, the surviving members of the band Nirvana, surprised FireAid viewers by reuniting at the event.

The three were joined by other performers, including St. Vincent, who sang the band's “Breed.” Kim Gordon and Joan Jett also followed with their own unexpected performances.

All three artists sang with the surviving members of Nirvana for its Rock Hall induction in 2014.

Violet Grohl, the eldest daughter of Grohl, the Foo Fighters frontman and former Nirvana drummer, also performed the Nirvana song "All Apologies."

Katy Perry is proud to be a California girl.

"Can we keep this energy going forever?" Perry said before performing her hit song about the Golden State. "This is what makes us human. This is what separates us from the robots. This is humanity, this is love, this is kindness. I have been so inspired by how quickly our community organized to help our neighbors in need. It really reminds me that the people have the power."

She waved the state's flag while walking around the stage during the number.

Katy Perry, accompanied by Pasadena Chorale, began her performance with "Rise," a song about survival. She thanked them before transitioning to another one of her hits, "Roar."

"California, we always rise," the pop star said. "And we always roar, don't we?"

Over three three hours into the show, and by our tally, at least nine more artists are still slated to perform.

They include: Billie Eilish (who joined Green Day earlier in the night for one song), Katy Perry, Lady Gaga, Lil Baby, Olivia Rodrigo, Peso Pluma, Stevie Wonder, Sting and the Red Hot Chili Peppers.

Stevie Nicks stepped onstage to cheers as she sang “Stand Back.” Afterward, she gave credit to local firefighters for saving her wooden house — which she said could have set the whole street ablaze if it burned.

“Knowing that I was a full-on Pacific Palisadean woman with an old, beautiful, famous house that was almost taken from me as the fire came up the hill behind my house, and I was pretty sure, as they whisked me away and evacuated me — my least favorite word now — to another safe place, that when I turned around and looked my house would be up in flames,” Nicks recounted.

But the house “stands strong, just like her mom. And in my opinion, she saved that whole street."

Dedicating her next song to the firefighters, she launched into “Landslide.”