of the songs rehearsed at Twickenham. The Beatles gave their last public performance on the rooftop of Apple's headquarters on 30 January 1969, as a substitute for an audience-based concert. Business difficulties In early 1969, Apple Corps was plagued by mismanagement and was losing money. On 26 January, Lennon and Ono met with Allen Klein, the founder of ABKCO Records, regarding managerial advice. Lennon requested that Klein represent his business interests in the band. McCartney chose to be represented by American entertainment lawyers Lee and John Eastman, the father and brother of his girlfriend Linda Eastman, whom he married on 12 March. In April, after a series of rancorous meetings between Klein, the Eastmans and the Beatles, Klein was appointed as the band's business manager on an interim basis, with the Eastmans as the Beatles' lawyers. The band members' quarrels and disharmony over musical matters soon permeated their business discussions. Dick James, the managing director of Northern Songs (publisher of the Lennon–McCartney song catalogue) became increasingly concerned over the band's dissension and resentment towards him due to his refusal to renegotiate their royalty rate. Without informing Lennon or McCartney, James and Northern Songs' chairman Emmanuel Silver accepted a bid from the British entertainment conglomerate Associated Television (ATV) to sell their 32% stake in the company and recommended other shareholders do the same, which would give ATV a controlling interest. Lennon and McCartney, who together owned 26% of the stock, made a bid to gain a controlling interest in Northern Songs but were unsuccessful. The Eastmans and Klein soon developed an adversarial relationship given their disparate advice and counsel. Conflicting advice regarding an offer to purchase Epstein's NEMS Enterprises, which still collected 25% of the Beatles' income, resulted in a missed opportunity and the Epstein family sold their 90% stake to Triumph Investment Trust instead. Given a choice between Klein and the Eastmans, Harrison and Starr opted for Klein. The Eastmans were dismissed as the Beatles' legal representation, and on 8 May, Lennon, Harrison and Starr signed a contract with Klein to be the band's business manager. This further aggravated the underlying mistrust and antipathy experienced within the band. Rolling Stone states that "Klein is easily the least famous of the four [new people in the Beatles' lives], but arguably the one who played the biggest role in their demise." Abbey Road and Lennon's departure With the troubled Get Back project