High Park. McCartney's two months in Scotland created an estrangement between him and his bandmates, further to the division caused by their appointment of Allen Klein as business manager in May that year. McCartney later cited Klein's appointment as the first "irreconcilable difference" within the Beatles, since he continued to favour New York lawyers Lee Eastman and John Eastman – father and brother, respectively, of his wife Linda. For McCartney, the period following Lennon's departure was also marked by a bout of severe depression, during which, in his own estimation, he came close to suffering a nervous breakdown. In his book Fab: An Intimate Life of Paul McCartney, Howard Sounes writes of the McCartneys' exile at High Park: "This was grim for Linda. She had a seven-year-old and a baby to look after, with a husband who was depressed and drunk. She later told friends it was one of the most difficult times in her life, while Paul reflected that he might have become a rock 'n' roll casualty at this point in his career." With Linda's encouragement, McCartney began to consider a future outside the Beatles, by writing or finishing songs for his first solo album, McCartney. Content and recording Studer home recordings, December 1969 – January 1970 McCartney and his family returned to London shortly before Christmas 1969, and he started work on the album at his home in Cavendish Avenue, St John's Wood. The recordings were carried out on a recently delivered Studer four-track tape recorder, without a mixing desk, and therefore without VU displays as a guide for recording levels. McCartney described his home-recording set-up as "Studer, one mike, and nerve". He played all the musical instruments on the album – from acoustic and electric guitars and bass to keyboards, drums and various percussion instruments – with Linda supplying backing vocals on some songs. The album's recordings eschewed the musical sophistication that distinguished the Beatles' work with producer George Martin, particularly the band's 1969 release Abbey Road. According to The New Rolling Stone Encyclopedia of Rock & Roll, McCartney is "a one-man-studio-band LP" with "a pronounced homemade quality; it was spare and sounded almost unfinished". Rodriguez writes that in his avoidance of the Abbey Road studio aesthetic, "In his own way, [McCartney] was fulfilling the 'as-nature-intended' theme of the aborted 'Get Back' sessions, albeit as a one-and-a-half man band." McCartney first taped a 45-second portion of