Ronnie James Dio’s autobiography, Rainbow In The Dark, will be released on July 27th. 

Dio had been working on his memoir prior to his passing in 2010. It will be completed by his longtime friend and music writer Mick Wall

According to Permuted Press, the book will “cover the luck that led to the birth of Rainbow and a productive but difficult collaboration with Ritchie Blackmore; the chance meeting that made him the second singer of Black Sabbath, taking them to new levels of success; the surprisingly tender story behind the birth of the Devil Horns, the lasting symbol of heavy metal; his marriage to Wendy, which stabilized his life, and the huge bet they placed together to launch the most successful endeavor of his career…his own band, Dio.”

The iconic metal singer passed from stomach cancer on May 16th, 2010 at age 67.