From a New Yorker Magazine online article:
“Abbey Road” was the Beatles’ last word—the final recordings by the most popular and influential artists of the nineteen-sixties. Now, on the occasion of its fiftieth anniversary, “Abbey Road” has been expertly remixed by Giles Martin, George Martin’s son and protégé, and reissued in a super-deluxe edition that comes with an archive of studio outtakes and a hundred-page book of essays and liner notes that chronicle how the recordings were made. “The Beatles are good even though everybody already knows that they’re good,” the classical composer Ned Rorem observed in 1968, alluding to how the band’s immense popularity confounded the usual notions of discriminating taste. If anyone needs to be reminded of this, this new edition of “Abbey Road” should do the trick.
In the spring of 1969, Paul McCartney telephoned George Martin to ask if he would be willing to work with the Beatles on a new album they planned to record in the months ahead. Martin, who was widely regarded as the most accomplished pop-record producer in the world, had overseen the making of all nine albums and nineteen singles that the Beatles had released in Britain since their début on E.M.I.’s Parlophone label, in 1962. His reputation was synonymous with that of the group, and the fact that McCartney felt a need to ask him about his availability dramatized how much the Beatles’ professional circumstances had changed since the release of the two-record set known as the White Album, in the fall of 1968. In Martin’s view, the five months of tension and drama it took to make that album, followed by the fiasco of “Get Back,” an ill-fated film, concert, and recording project that ended inconclusively in January, 1969, had turned his recent work with the Beatles into a “miserable experience.”