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
Por Siempre Beatles on the 1966 UK compilation "A Collection of Beatles Oldies", while "The Fool on the Hill", "Strawberry Fields Forever", "Your Mother Should Know", "Penny Lane", "Baby, You're a Rich Man" and "Blue Jay Way" all appeared on the American "Magical Mystery Tour" LP. The latter, while widely available as an import in Britain since 1967, received an official release there through Parlophone in 1976. "I Call Your Name" and "Yes It Is" had been issued on American albums during the 1960s – "The Beatles' Second Album" and "Beatles VI", respectively. All songs by Lennon–McCartney, except tracks 11 and 12 by