Foo Fighters fans were stunned when rock legend Geezer Butler joined the band on stage in Birmingham.
The Black Sabbath bassist performed alongside Dave Grohl and the band for a rendition of their 1970s classic hit, Paranoid.
The moment rounded off the West Midlands leg of the Fighters’ UK tour on Thursday.
Butler, who is from the city, was met with cheering and roars of support when he stepped out on stage at Villa Park Stadium.
Fans took to X, formerly known as Twitter, to share videos of the “epic” performance.
One wrote: “Legend Geezer Butler back home.”
“What an epic show, Foo Fighters at Villa Park and bringing out Geezer Butler,” another commented.
A third said: Bucket list band in the Foo Fighters checked off yesterday evening.
“Fantastic night! Loved the Geezer Butler surprise in Birmingham!”
Black Sabbath – also made up of singer Ozzy Osbourne, guitarist Tony Iommi and drummer Bill Ward – formed in Birmingham in 1968 and are credited as pioneers in heavy metal music.