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 Out" and "Paperback Writer", were remixed in stereo for the album, since the majority of the Beatles' singles had only been mixed for mono release previously. The stereo mixing was overseen by George Martin, the Beatles' producer, with none of the band members present. The mixing sessions took place between 31 October and 10 November 1966 at EMI Studios (later Abbey Road Studios) in London. Martin was surprised at how time-consuming the remixing of "She Loves You" and "I Want to Hold Your Hand" proved to be. In the case of "She Loves You", the 1963 two-track recording tape had