Revolver (Beatles album) as the Beatles'. While also highlighting the importance of the production, David Howard writes that "Revolver" was a "genre-transforming album", on which Martin and the Beatles had "obliterated recording studio conventions". Combined with the similarly "visionary" work of American producer Phil Spector, Howard continues, through "Revolver", the recording studio had become "its own instrument; record production had been elevated into art." Whereas "Sgt. Pepper" had long been identified as the Beatles' greatest album, since the 2000s "Revolver" has often surpassed it in lists of the group's best work. Sheffield cites the album's 1987 CD release, with the full complement of
Revolver (Beatles album) following January, the Beatles carried out overdubs on live recordings taken from their 1965 US tour, for inclusion in the concert film "The Beatles at Shea Stadium". The group's manager, Brian Epstein, had intended that 1966 would then follow the pattern of the previous two years, in terms of the band making a feature film and an accompanying album, followed by concert tours during the summer months. After the Beatles vetoed the proposed film project, the time allocated for filming became a three-month period free of professional engagements. This was the longest period the band members had experienced outside the