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) to be "the best of the bunch, the letter that went unanswered" among a series of reciprocally influential musical statements exchanged between the Beatles and the Beach Boys over 1965–67.<ref name="Medsker/PM"></ref> In a 2007 appraisal of the band's albums, Henry Yates of "Classic Rock" magazine paired it with "Sgt. Pepper's" as the two "essential classics" in the Beatles' canon and described it as "Always the rock fraternity's favourite (and the blueprint for Noel Gallagher's career)". Writing in "Paste", Mark Kemp says that the album "completed [the Beatles'] transformation from the mop tops of three years earlier into bold, groundbreaking experimental