The long-awaited autobiography from heavy metal music icon Ronnie James Dio, the powerhouse voice of Elf, Ritchie Blackmore’s Rainbow, Black Sabbath and his long-time bespoke band DIO, will be published on July 27 by Permuted Press in the U.S. and Canada and Constable in the U.K. Co-written with British music journalist and longtime Dio friend Mick Wall, and Dio’s widow and long-time manager Wendy Dio.