Revolver (Beatles album) group collective since 1962, and gave them an unprecedented amount of time to prepare for a new album. Writing in "The Beatles Forever", Nicholas Schaffner cites 1966 as the start of the band's "'psychedelic' period" and adds: "That adjective implies not only the influence of certain mind-altering chemicals, but also the freewheeling spectrum of wide-ranging colors that their new music seemed to evoke." Music journalist Carol Clerk describes "Revolver" as having been "decisively informed by acid", following John Lennon and George Harrison's continued experimentation with the drug LSD since the spring of 1965.<ref name="Clerk/Uncut"> Available at Rock's Backpages (subscription required).</ref>
1 (Beatles album) sides of the vinyl represented appropriately different styles and phases of The Beatles' career: in order, Beatlemania's Mersey Beat, folk-rock/pre-psychedelic style, purely experimental/psychedelic style, back-to-basics/rock style. This was apparently a coincidence, considering that the songs are distributed on the sides following a balance-time rule. (The cassette edition comprises the first two vinyl sides on its side A and the last two vinyl sides on its side B, with a length of 38:32 and 40:35 respectively). Additional musicians 1 (Beatles album) 1 is a compilation album by the English rock band the Beatles, originally released on 13 November 2000. The album