A Collection of Beatles Oldies were to sever ties with their longtime manager, Brian Epstein, and instead be represented by Allen Klein. Fans of the band were disappointed by the announcement that, in a break from the tradition established in 1963, the Beatles were not playing any UK shows over the Christmas period. On 10 November, four days after 200 fans had demonstrated outside Epstein's home in central London, newspapers reported that there would be no further concert tours by the Beatles. Although Epstein voiced support for the Beatles' continuing evolution as artists, highlighting the advances they had made with their August 1966 album "Revolver",
Revolver (Beatles album) resulted from varying tape speed (or varispeeding) extended to recording a basic track at a faster tempo than they intended the song to sound on disc. During the sessions, Emerick recorded McCartney's bass guitar amplifier via a loudspeaker, which Townsend had reconfigured to serve as a microphone, in order to give the bass more prominence than on previous Beatles releases. Although this particular technique was used only on the two songs selected for the May 1966 single, an enhanced bass sound was a feature of much of the album. Emerick also ensured a greater presence for Starr's bass drum, by