As tributes continue to pour in, two of Ozzy Osbourne's children — Jessica and Louis — have honored their late father in subtle ways after the former Black Sabbath frontman and legendary rocker died on Tuesday,

Black Sabbath frontman Ozzy Osbourne died following his battle with a genetic form of Parkinson's disease, while a brain expert says the singer's lifestyle could have contributed.

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.

“The moment he walked out on stage, it was just like he was shot with a bolt of lightning and he came alive,” Glendenning recalled. “I didn’t even think it was physically possible for a person that existed day to day the way he did to have that much energy and to turn on that much and to be that much of a showman.”

Sharon Osbourne is reportedly considering burying her husband Ozzy in the gardens of their Buckinghamshire estate. The Black Sabbath rocker died aged 76 on Tuesday following a battle with Parkinson’s,