Johnny Depp surprised fans at Alice Cooper's London concert with an emotional tribute to Ozzy Osbourne following the rock legend's death

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.

Osbourne died on Tuesday at 76, just weeks after he and Black Sabbath performed at their farewell Back to the Beginning concert earlier in July.