WASHINGTON: Not content with writing a best-selling autobiography, Rolling Stone guitarist Keith Richards now is coming out with his first children’s book in September, publishing house Little, Brown said Tuesday.

“Gus and Me: The Story of My Granddad and My First Guitar” harks back to the rocker’s childhood when his grandfather, Theodore Augustus “Gus” Dupree, a big-band musician, introduced him to the instrument that would define his life.

“I have just become a grandfather for the fifth time, so I know what I’m talking about,” said Richards in a press release from Little, Brown that he posted on his website.

“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.”

Richards, 70, widely regarded as one of rock ‘n’ roll’s finest guitarists, made his literary mark when “Life” — a revealing expose of the Stones’ wild side — was published in 2011 and raced up the bestseller lists.