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.

Surviving Nirvana members Dave Grohl and Krist Novoselic and former touring guitarist Pat Smear reunited at the California wildfires benefit concert FireAid on Thursday night. They played four Nirvana classics with the help of some guest vocalists.

Violet Grohl joined her father, Dave Grohl, and his former Nirvana members for a performance of ‘All Apologies’ at the FireAid benefit concert

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

From surprise guests to touching moments of humility, here were the most memorable moments from the Jan. 30 FireAid benefit concerts in Los Angeles.

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

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

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

The band also brought out Dave Grohl's 18-year-old daughter, Violet Grohl, to wrap up the set with an emotional rendition of "All Apologies"

Dave Grohl, Krist Novoselic and Pat Smear reunited and were helped by variety of guest vocalists for a Nirvana performance at the FireAid benefit concert.

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