This career spanning documentary on heavy metal legend Ronnie James Dio delves deep into his incredible rise from 50's doo-wop crooner, to his early classic rock days in Ritchie Blackmore's Rainbow, to replacing the iconic lead singer Ozzy Osborne in … Ronnie James Dio, Wendy Dio, Tony Iommi, Geezer Butler, Bill Ward, Vinny Appice, Lita Ford Added on crave 2023-05-02. Youtube Trailer