AP has the details: "21 Nights," a "photographic essay" that offers "a rare glimpse into the life, lyrics, and mystique" of the maker of such hits as "1999" and "Purple Rain," will be published worldwide come fall, according to Atria Books, an imprint of Simon & Schuster.

The book, his first, is based on Prince's 21 sold-out concerts in as many nights at London's O2 Arena in 2007. And it comes with a CD too! All the details are - here

Preview and Purchase Prince CDs