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
Revolver (Beatles album) instrumentation played by a Beatle and a novelty song marked a significant departure from the usual content of the band's singles. Schaffner likens the Beatles' 1966 recordings to the moment of transformation in the film "Wizard of Oz", "where, when Dorothy discovers herself transported from Kansas to Oz, the film dramatically changes from black-and-white to glorious technicolor". The album was also the source of confusion for the group's more conservative fans. A female fan later complained in "Beatles Monthly" that 1966 represented the end of "The Beatles we used to know before they went stark, raving mad." The release coincided