Sharon Osbourne and children Jack and Kelly attend Ozzy Osbourne's funeral procession in Birmingham as fans line the streets to pay their final respects

Halford was unable to perform at Black Sabbath's Back to the Beginning concert last month due to a previously scheduled show

A death certificate filed at a register office in London revealed that Ozzy Osbourne's cause of death was a heart attack.

The "American Idol" alum shares a heartfelt message to Osbourne after working together on the set of their new Fox show, "LEGO Masters Jr."

Ozzy Osbourne may have been nicknamed the Prince of Darkness, but the late rocker also had a notorious sweet tooth.

Leads, however, are usually single-tracked, save for harmonies. Eddie Van Halen avoided going down this route for his riffs, as there were so many nuances in his playing. Those differences would create glaring clashes in the mix. The other option was to simplify the part, or his approach to their performance, but he wasn’t willing to do that.