The Beatles are set to publish their first official book in more than two decades, the Guardian reports.

The most famous rock band in history will release The Beatles: Get Back next year. The book will be a companion to a documentary by Lord of the Rings director Peter Jackson; both will focus on Let It Be, the Beatles’ last album, which was released in 1970.

The band’s website says the book “brings together enthralling transcripts of their candid conversations, edited by leading music writer John Harris, with hundreds of extraordinary images, most of them unpublished.”

The book “promises to be a must-have title, to be collected and treasured by generations of Beatles fans and music lovers worldwide,” publishers Apple Corps and Callaway Arts Entertainment said.

The Beatles: Get Back will be the band’s first official book since The Beatles Anthology, the band’s 2000 autobiography. It will feature a foreword by Peter Jackson, an introduction by novelist and playwright Hanif Kureishi (The Nothing), and photographs by Ethan Russell and the late Linda McCartney.

Callaway Arts Entertainment publisher Nicholas Callaway said, “The Beatles gave my generation their genius and their joy and they changed the world through their art. The creativity and inspiration expressed in this landmark book and in Peter Jackson’s film are as important and relevant today as ever.”

The Beatles: Get Back is slated for publication on Aug. 31, 2021.

Michael Schaub is a Texas-based journalist and regular contributor to NPR.