The legendary vocalist of Black Sabbath, Rainbow, Dio, Elf, and Heaven and Hell; Ronnie James Dio has begun writing an autobiography. The singer is reportedly trying to fit in some writing around the hectic schedule of Heaven and Hell, who is about to release a new album, "The Devil You Know" later this month. Says Dio, "Every time I feel I'm getting halfway there, another halfway comes along, but yes, I'm writing it and it's certainly going to be very, very interesting for people interested in the bands I've been in and the people I've played with.

"You have to have a focal point, and I guess that had to be me. It's an autobiography, but within it, I tell the stories that somehow explain a little bit what [former RAINBOW mastermind] Ritchie [Blackmore]'s like or [BLACK SABBATH's] Tony [Iommi]'s like or Geezer [Butler]'s like. I don't analyze them, but just in telling the tales I paint everyone in as good a light as possible. It's not a tell-all book."

The book, which has yet to be titled should be out sometime in 2010.