Alice Cooper paid tribute to Ozzy Osbourne during his latest performance in London, with a little help from Johnny Depp.
The rocker showed his respect for Osbourne, three days after the Black Sabbath star's family announced his death at age 76.
Cooper surprised the crowd at London's O2 Arena with a special appearance from Depp, as his band performed Sabbath's 1970 hit Paranoid.
Depp walked on stage with a guitar in hand halfway through the song.
Cooper, rocking an Osbourne T-shirt, raised his fist in the air as the song came to a close.
The performance was part of Cooper's sold-out London gig with Judas Priest, timed to coincide with the Alice Cooper band's first new album in more than 50 years, The Revenge of Alice Cooper.
Depp stuck around for one final song after the Osbourne tribute, performing Cooper's smash hit School's Out alongside original band members Dennis Dunaway, Neal Smith and Michael Bruce.
Cooper and Depp are longtime collaborators themselves, performing in the supergroup Hollywood Vampires with Joe Perry and Tommy Henriksen since 2012.
In an interview with Planet Rock last week, Cooper shared his sadness at Osbourne's passing.
"I was on my way to the stage when I heard," Cooper shared.
"And I went, 'Oh, that's not right. He just did this. And I saw him. He was singing well.' Even though you know it's coming, what a shock to the system."