Revolver (Beatles album) audio miking and automatic double tracking (ADT), in addition to employing musical instrumentation outside of their standard live set-up. Some of the changes in studio practice introduced by "Revolver", particularly ADT, were soon adopted throughout the recording industry. The sessions also produced a non-album single, "Paperback Writer" backed with "Rain", for which the Beatles filmed their first on-location promotional films. In the UK, "Revolver" fourteen tracks were released to radio stations throughout July 1966. In the US, it was the last Beatles album to be subjected to Capitol's policy of altering the band's intended running order and content. The release
A Collection of Beatles Oldies theory, the artwork offered the first clues relating to the alleged demise of Paul McCartney and his replacement in the Beatles by a lookalike, a scenario that is said to have taken place in November 1966 and been facilitated by the group's retirement from live performance. "A Collection of Beatles Oldies" offered the debut album release in Britain for many of the band's singles, although these songs had been available on compilation EPs since their initial release. It also provided the debut release in stereo for these recordings, since the Beatles favoured mono mixes for their singles until 1969. The