In 1967, The Beatles unleashed their seminal album on an unsuspecting world. This new edition of The Act You've Known For All These Years explores the huge impact the album had on The Beatles and their contemporaries - Bob Dylan, The Beach Boys, Pink Floyd and The Rolling Stones. It was part of the reappraisals of Sgt. Pepper's cultural impact during 2007's fortieth anniversary, and the considerable press coverage that generated.

Clinton Heylin reveals the inspirations and explodes the myths behind the album - and the 'Summer of Love' itself. The book also explores the history of the album as a cultural phenomenon, and reappraises its status as one of the classic albums of all time, from 1967 to the present day. Features interviews with those who were there at the time and those who followed in The Beatles' wake.