Ronnie James Dio (born Ronald James Padavona on July 10, 1942 in Portsmouth, New Hampshire, USA), is an American heavy metal vocalist and songwriter who has performed with Elf, Rainbow, Black Sabbath, and his own band Dio. Other musical projects include the collective fundraiser Hear `n Aid. He is widely hailed as one of the most powerful singers in heavy metal, renowned for his consistently powerful voice and for popularizing the "devil`s horns" hand gesture in metal culture. He is currently collaborating on a project with former Black Sabbath bandmates Tony Iommi, Geezer Butler and Vinny Appice, under the moniker Heaven and Hell. Their first studio album, The Devil You Know, is scheduled for release on April 28, 2009.