In the early 1980s, John Barrett, a
balance engineer employed by
EMI, found himself unoccupied while undergoing
chemotherapy.
Ken Townsend, the General Manager of
Abbey Road Studios, later recalled suggesting Barrett keep his mind engaged by listening to
the Beatles' session tapes and write down information pertaining to them. Author Stephen Matteo alternatively suggests Barrett's work was intended to gather interesting unreleased material for
The Beatles at Abbey Road, a 1983 multimedia presentation at Abbey Road Studios. Barrett produced a colour-coded catalogue, which Townsend later said displayed an "incredible" attention to detail. In 1982, while attending
Liverpool's annual Beatles convention, Townsend, Barrett and author Brian Southall used Barrett's work during a Q&A session. Attendees were enthusiastic about the new information and suggested the catalogue be published, but Barrett's death in 1984 precluded it. The project was nearly abandoned until Abbey Road employee Kathryn Varley pushed for its completion.
Mark Lewisohn began formally researching the Beatles in the late 1970s, working as a research assistant for
Philip Norman's book
Shout! (1981). In 1986, Lewisohn published his first reference book,
The Beatles Live!, a chronological guide of the group's live performances. The book took years to research and compiles over 1,000 primary sources to provide an exhaustive guide. Because of his work compiling
The Beatles Live!, EMI commissioned Lewisohn in 1987 to continue Barrett's work and write a book detailing the Beatles' recording sessions. Besides Abbey Road Studios staffers and the Beatles, Lewisohn was the first person granted access to listen to all of the Beatles' working tapes, a privilege not extended again until 1995 for writer
Mark Hertsgaard. Working from 1987 through 1988, the book took two years to research and write. Lewisohn consulted the studio's recording paperwork, reproducing some of it in the book, and interviewed eighty people who were present at the sessions, including the Beatles' producer
George Martin, publicist
Derek Taylor and
engineer Geoff Emerick. Besides Barrett's previous research, the collection of Beatles recordings stored at Abbey Road Studios had never been properly archived. Listening to over four hundred hours of tapes, Lewisohn's working process served the dual purpose of both researching the book as well as organising the collection, cataloguing its various
mixes, submixes, mastertakes and outtakes. == Publication and content ==