Hours after Osbourne's death, Idol spoke with The Hollywood Reporter about Osbourne's musical legacy, and the path he carved for the musicians who came after him.

Fans, musicians and former bandmates have paid tribute to Ozzy Osbourne, the frontman of pioneering heavy metal band Black Sabbath, who has died aged 76.

Ozzy Osbourne, the former lead singer of British band Black Sabbath, was about to rock. The mood was festively macabre. Posters for the “Diary of a Madman Tour” showed Osbourne in his “Prince of Darkness” alter ego — complete with devil horns — and warned attendees that eating before the concert was “not recommended.

Over the course of his storied music career, rock icon Ozzy Osbourne faced health battles with substance abuse and Parkinson's disease.

Rage Against the Machine guitarist Tom Morello, who served as musical director for Osbourne’s final show, shared a photo with the late singer on Instagram, writing, “Good bless you Ozzy.” Metallica’s X account also shared an image with Osbourne with a heartbroken emoji.

Osbourne is known both as a pioneer of heavy metal and as a goofy and lovable father on a hit reality TV show of the early 2000s. He was born John Michael Osbourne on Dec. 3, 1948. 93.3 WMMR DJ Jacky BamBam said, "He started it all … Ozzy was your Prince of Darkness."

Ozzy Osbourne 's family was an important part of his life. The heavy metal icon, who died at 76 on July 22, spent many of his later years soaking up quality time with his children. The Black Sabbath lead singer got a second act as one of America's most beloved dads, sharing another side of himself on The Osbournes, which premiered on MTV in 2002.