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>
The Beatles (album) that band." He also supported the idea of the double album, to clear out the backlog of songs that the group had at the time. By contrast, McCartney said that it was fine as it was, adding: "It's the bloody Beatles' "White Album". Shut up!" "The Beatles" was the last Beatles album to be mixed separately for both stereo and mono, though the mono version was issued only in the UK and a few other countries. All but one track exist in official mono mixes; the exception is "Revolution 9", which was a direct reduction of the stereo master. The