Ronald James Padavona (July 10, 1942 – May 16, 2010), known professionally as Ronnie James Dio, was an American heavy metal singer. He fronted numerous bands throughout his career, including Elf, Rainbow, Black Sabbath, Dio and Heaven & Hell.
Dio's music career began in 1957 as part of the Vegas Kings (later Ronnie and the Rumblers).
