"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"

Black Sabbath icon Ozzy Osbourne was "whacked in the gut" by his jealousy of the band's replacement after the singer was kicked out of the group in 1979