Then came what was perhaps the biggest surprise: Violet Grohl, Dave’s 18-year-old daughter, singing lead vocals on Nirvana’s In Utero highlight “All Apologies.” Her vocals were strong and well-suited for the song, and while the magnitude of the Kia Forum’s crowd wasn’t lost on her, she was remarkably comfortable in front of the massive crowd.

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

A rotating group of women vocalists joined the surviving members of the legendary '90s band for a raucous reunion set.

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

FireAid, a sprawling benefit concert for wildfire relief, featured Joni Mitchell, Stevie Wonder, Billie Eilish, Lady Gaga, members of Nirvana and dozens more.

Joan Jett, Kim Gordon and St. Vincent also joined Dave Grohl, Krist Novoselic and Pat Smear onstage at the charity fundraiser in Los Angeles

Dave Grohl, Krist Novoselic and Pat Smear performed at the star-studded benefit, alongside Green Day, Billie Eilish, Lady Gaga, Red Hot Chili Peppers and loads of others

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.