Ozzy Osbourne has been remembered as a “pioneer,” a “fearless talent” and a “dear friend,” in an outpouring of tributes from fellow musicians and his former Black Sabbath bandmates following his death on Tuesday at the age of 76.

Johnny Depp surprised fans by joining Alice Cooper's July 25 concert in London to perform Black Sabbath's hit "Paranoid" as a tribute to Ozzy Osbourne, who died three days prior at the age of 76.

The sweet tribute, which came from Osbourne's former daughter-in-law, featured many never-before-seen photos of the late rocker.

Ozzy Osbourne has died at 76 following his battle with Parkinson’s. Ronnie Wood Yungblud and more pay emotional tributes to the Black Sabbath frontman

Fans in the U.K. and the U.S. honor Ozzy Osbourne, who played an crucial part in pioneering heavy metal with Black Sabbath.

The US groove metal veterans learned about Osbourne’s death mere minutes before taking the stage in Austria on Tuesday