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
The Beatles in India out with the Maharishi engendered a long-lasting suspicion that "they'd become faddists tipped into eccentric habits by unfathomable fame". Having given up touring in 1966, the trip to India was the last time all four Beatles travelled together. Their self-exploration through meditation and before that, LSD, led to each of them adopting a more individual focus, at the expense of band unity, through to the group's break-up in 1970. The acrimony within the band was evident during the recording of their 1968 double album "The Beatles" (also known as the "White Album"), when they recorded many of the songs written