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) North America, where three of its tracks instead appeared on the June 1966 release "Yesterday and Today". The Beatles recorded the album following a three-month break from professional commitments at the start of 1966, and during a period when London was feted as the era's cultural capital. The songs reflect the influence of psychedelic drugs such as LSD and the increasing sophistication of the Beatles' lyrics to address themes including death and transcendence from material concerns. With no thoughts of reproducing their new material in concert, the band made liberal use of studio techniques such as varispeeding, reversed tapes, close