As the rock world and fans alike mourn Ozzy Osbourne's death at age 76, some of his peers teamed up to pay tribute.

Johnny Depp surprised fans by joining Alice Cooper's concert in London to perform Black Sabbath's hit "Paranoid" as a tribute to Ozzy Osbourne.

Johnny Depp made a surprise appearance during Alice Cooper's latest sold-out gig in London, as he joined the rocker for a performance of Black Sabbath's 'Paranoid' during a tribute to Ozzy Osbourne.