Dr. Dre is suing the author of the book "Rollin' With Dre: The Unauthorized Account: An Insider's Tale of the Rise, Fall, and Rebirth of West Coast Hip Hop" over an alleged loan the rapper gave him, according to TMZ.

Yesterday, Dre filed a lawsuit in the L.A. County Superior Court claiming he loaned writer Bruce Williams $101,377.85, although it is unclear what the loan was for. Dre alleges he's yet to receive the money back and is seeking immediate repayment.

The book, released in March, is about the struggles Dre and other rappers faced in the hip-hop world, and investigates Death Row Records' internal operations. The book also touches on Dre's personal life and describes what it's like to work with the hip-hop mogul. Williams, who claims to have been close with the rapper for a number of years working as his right-hand man, also wrote about a falling-out he had with Dre. It is unclear whether the argument was over the loan.

During an interview with HipHopDX.com in May, Williams described his relationship with Dre, saying, "There was a time where you couldn't speak to Dre unless you spoke to me first. It was that deep. I learned the music business from working with him."

Prince fans have something new to look forward to this month: His first official book!

"21 Nights", a photographic essay about the singer's European tour last summer, co-created with photographer Randee St. Nicholas, is a lavish collection of photos, poetry and music that offers a rare glimpse into the life of one of the world's biggest stars.

The singer performed two intimate benefit shows in New York on Friday night to help promote the book's release.

Fans can peruse more than 100 never-before-published images from his sold-out 21 concerts while listening to Indigo Nights/Live Sessions, the exclusive CD that is included with the book and features 15 live recordings along with one new song. The 77-minute CD attempts to invoke the spirit of his raw after-show sessions while providing a soundtrack for the reader. Fans can follow Prince on his journeys through London and Prague, sharing in escapades with his band of musicians, singers and dancers captured in full color and black and white. The book provides an intimate look at what life on the road is like for one of music's biggest stars — from the frenetic pace backstage to his solitary moments in hotel rooms.

Juxtaposed within these scenes readers will also find poetry written by Prince, pieces that touch on a multitude of inspirations: love, the nature of desire, our current political climate, the price of fame and more. The poetry provides a dreamlike narrative that borders on stream-of-consciousness and is, not surprisingly, similar in theme to the lyrics of many of his songs.

Check out our sneak peek at five images from "21 Nights" after the jump!