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.

The significance of the opening in Ireland is that Cobain had Irish roots himself, having ancestors who emigrated to the United States from Carrickmore, County Tyrone, in 1875. Cobain was even due to perform with Nirvana at Dublin’s RDS Arena a mere three days after he killed himself in April 1994.

The band appeared at last night’s charity spectacular with guest vocalists St Vincent, Joan Jett, Kim Gordon and Violet Grohl

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

The surviving members of Nirvana reunited at FireAid with guest vocalists St. Vincent, Kim Gordon, Joan Jett and Violet Grohl.

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

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

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"

Nirvana reunited to perform at the FireAid benefit concert in Los Angeles on Thursday, 30 January, with an unexpected special guest as Kurt Cobain's replacement. Drummer Dave Grohl's 18-year-old daughter Violet took to the stage to sing the band's 1993 track "All Apologies.

Dave Grohl's daughter Violet sang with his fellow Nirvana band members on Thursday, Jan. 30 at the FireAid Benefit Concert for California Fire Relief

Legendary grunge band Nirvana reunited at Fireaid for a benefit concert on Thursday, January 30, to support the LA wildfire relief effort.