If the Beastie Boys wrote a book, you might expect it to depart from standard memoir form. Rather than a strict narrative patiently winding its way from bygone days, such a book might — in keeping with the group’s hypereclectic style — be a pastiche of voices, images, irreverent humor and pop-culture reference points.

And that, it turns out, is exactly what the Beastie Boys’ book will be like.

Michael Diamond (a k a Mike D) and Adam Horovitz (Ad-Rock), the surviving members of the hip-hop group, have signed a deal with Spiegel & Grau, an imprint of the Random House Publishing Group, for a book celebrating their history and aesthetic. A title has not been chosen, but it is planned to come out in fall 2015, the publisher is expected to announce this week.

The publishing world has had a flurry in recent years of rock memoirs by baby boomers like Keith Richards, Eric Clapton and Pete Townshend. But readers should not expect anything like those books, said Julie Grau, the publisher of Spiegel & Grau.

The Beastie Boys are “interested in challenging the form and making the book a multidimensional experience,” Ms. Grau said in an interview. “There is a kaleidoscopic frame of reference, and it asks a reader to keep up.”