Black Sabbath reissues two classic albums from the Ronnie James Dio era Singer Ronnie James Dio joined Black Sabbath in 1979 which resulted in two back-to-back classic albums: "Heaven And Hell" and "Mob Rules." Rhino Records salutes this era with newly remastered versions of both albums expanded with rare and unreleased music. Author: Jan 14, 2021 Singer Ronnie James Dio joined Black Sabbath in 1979 which resulted in two back-to-back classic albums: "Heaven And Hell" and "Mob Rules." Rhino Records salutes this era with newly remastered versions of both albums expanded with rare and unreleased music. LOS ANGELES – Singer Heaven And Hell and Mob Rules. On those memorable albums, Dio’s soaring tenor and gothic songwriting were the perfect foil for the band’s bone-crushing mix of razor-sharp riffs, intense grooves, and dark imagery.