"He really wanted to do it and he was determined to do it," the group's guitarist said following Osbourne's death

Following Ozzy Osbourne's death, founding guitarist Tony Iommi wrote that he and his bandmates had "lost our brother"

Osbourne, who battled Parkinson’s before his death, sat onstage in a black leather chair as he performed for the 42,000-person crowd. He sang five songs by himself, before he was joined by his former bandmates for four Black Sabbath songs.