Keith Richards is writing a children's book.

Why not? You think his day job is filled with mature adults?

Richards -- who is currently touring the Far East with the Rolling Stones -- wrote the widely acclaimed autobiography "Life" in 2010. His new project, which was announced Tuesday by Little, Brown Books for Young Readers, will be called "Gus & Me: The Story of My Granddad and My First Guitar," as both a hardcover book with a CD and an ebook.

According to the New York Times, Richards, 70, will revisit some of the childhood memories he explored in "Life" -- specifically, his relationship with maternal grandfather Theodore Augustus Dupree, a jazz musician who encouraged Richards to take up the guitar.

The paper reported Richards's main collaborator is his 28-year old daughter, Theodora Dupree Richards, a model who was named for his grandfather. She also studied at New York Academy of Art and the School of Visual Arts and will be illustrating the book with pen and ink collages. Barnaby Harris and Bill Shapiro will contribute on the text.

"I have just become a grandfather for the fifth time, so I know what I'm talking about," Richards said in a statement. "The bond, the special bond, between kids and grandparents is unique and should be treasured. This is a story of one of those magical moments. May I be as great a grandfather as Gus was to me."

The book is set to be released Sept. 14.

Contact Tony Hicks at Facebook.com/BayAreaNewsGroup.TonyHicks or Twitter.com/insertfoot.