Question: When did the Beatles move to Apple studios?
About the article "Let It Be", section "Recording sessions".

Candidate passages:
In 1978, Aspinall instigated the first of three lawsuits on behalf of Apple Corps against Apple Computer, Inc. (now known as Apple, Inc.) for trademark infringement.
The first suit settled in 1981 with an amount of £41,000 being paid to Apple by Apple Computer.
As a condition of the settlement, Apple Computer was allowed to use its logo as long as it did not enter the music business.
The second suit with Apple Computer arose in 1989, when Apple Corps sued Apple Computer over its Apple IIGS (which included a professional synthesiser chip) claiming violation of the 1981 settlement agreement.
In 1991, a settlement of £13.5 million was reached.
McCartney praised Aspinall for trademarking the Apple name worldwide, and called Aspinall "Mr. X" in the Apple Corps organisation.
In September 2003, Apple Computer, Inc. was again sued by Apple Corps, this time for the introduction of the iTunes Music Store and the iPod, which Aspinall and Apple Corps believed was a violation of the previous agreement for Apple Computer to not distribute music.
The trial began on 27 March 2006 in the UK, and ended on 8 May 2006 in a victory for Apple Computer; the judge ruled the company's iTunes Music Store did not infringe on the trademark of Apple Corps.
Aspinall was also involved in several court cases in which Apple Corps took action against EMI:In the early 1990s, Aspinall became the executive producer for "The Beatles Anthology"; he, producer George Martin, and press officer Derek Taylor are the only non-Beatles seen in new footage for the documentary.
He continued to advise the surviving Beatles, as well as Lennon's and Harrison's estates, and to supervise the marketing of music, music videos, and merchandising.
On 10 April 2007, it was announced by Apple that Aspinall had "decided to move on" and Jeff Jones—a longtime VP at Sony Legacy—was hired as CEO to oversee the back-catalogue.
One of Aspinall's final tasks at Apple was to oversee the remastering of The Beatles' back-catalogue for an anticipated 2008 release. 
There was a hint that relations between the companies were improving at the January 2007 Macworld conference, when Apple CEO Steve Jobs featured Beatles content heavily in his keynote presentation and demonstration of the iPhone.
During that year's All Things Digital conference, Jobs quoted the Beatles song "Two of Us" in reference to his relationship with co-panelist Microsoft chairman Bill Gates.
Speculation abounded regarding the much anticipated arrival of the Beatles' music to the iTunes Store.
On 5 February 2007, Apple Inc. and Apple Corps announced a settlement of their trademark dispute under which Apple Inc. will own all of the trademarks related to "Apple" and will license certain of those trademarks back to Apple Corps for their continued use.
The settlement ends the ongoing trademark lawsuit between the companies, with each party bearing its own legal costs, and Apple Inc. will continue using its name and logos on iTunes.
The settlement includes terms that are confidential, although newspaper accounts at the time stated that Apple Computer was buying out Apple Corps' trademark rights for a total of $500 million.
Commenting on the settlement, Steve Jobs, Apple's CEO said, "We love the Beatles, and it has been painful being at odds with them over these trademarks.
It feels great to resolve this in a positive manner, and in a way that should remove the potential of further disagreements in the future.
"Commenting on the settlement on behalf of the shareholders of Apple Corps, Neil Aspinall, manager of Apple Corps said, "It is great to put this dispute behind us and move on.
The years ahead are going to be very exciting times for us.
We wish Apple Inc. every success and look forward to many years of peaceful co-operation with them.
"An announcement in April 2007 that Apple Corps had settled another long-running dispute with EMI (and that Neil Aspinall had retired and been replaced by Jeff Jones) further fueled media speculation that The Beatles' catalogue would appear on iTunes.
In early September 2007, an Apple press release for the new iPod touch, related iPod updates, and iPhone price cut was entitled "The Beat Goes On", the title of the Beatles' last press release before splitting up.
Although Beatles content was still unavailable from the iTunes store, each Beatle's solo work could be accessed and downloaded on this service.
Paul McCartney was quoted in "Rolling Stone" as saying that their catalogue would be released through digital music stores such as iTunes in the first quarter of 2008, but this did not happen until 2010. 
"The Beatles" was recorded between 30 May and 14 October 1968, largely at Abbey Road Studios, with some sessions at Trident Studios.
Although productive, the sessions were reportedly undisciplined and sometimes fractious, and they took place at a time when tensions were growing within the group.
Concurrent with the recording of this album, the Beatles were launching their new multimedia business corporation Apple Corps, an enterprise that proved to be a source of significant stress for the band.
The sessions for "The Beatles" marked the first appearance in the studio of Lennon's new girlfriend and artistic partner, Yoko Ono, who would thereafter be a more or less constant presence at all Beatles sessions.
Prior to Ono's appearance on the scene, the individual Beatles had been very insular during recording sessions, with influence from outsiders strictly limited.
McCartney's girlfriend at the time, Francie Schwartz, was also present at some of the recording sessions, as were Pattie Harrison and Maureen Starkey, the other two Beatles' wives.
Author Mark Lewisohn reports that the Beatles held their first and only 24-hour recording/producing session near the end of the creation of "The Beatles", which occurred during the final mixing and sequencing for the album.
The session was attended by Lennon, McCartney, and producer George Martin. 
This quiet song required 67 takes, and George Harrison did not play (during "The Beatles" sessions, the Beatles often recorded in separate studios).
During take 19 of "I Will", McCartney ad-libbed an untitled and uncopyrighted song (referred to as "Can you take me back?"
by author Ian MacDonald), a 28-second segment of which ended up on side 4 of the album "The Beatles" as what MacDonald described as “a sinister introduction to "Revolution 9"”.
Also ad-libbed by McCartney was "Los Paranoias", released, together with take 1 of "I Will", in 1996 on "Anthology 3".
The picture shown above features Apple Records' 45 rpm record.
It was manufactured by Dyna Products Inc (today's Dyna Music Entertainment Corporation) of the Philippines, 1968. 
The soundtrack was composed by Beatle George Harrison, whom Massot approached specially for the project.
Harrison had never done a film soundtrack, and told Massot he did not know how to do it, but when Massot promised to use whatever Harrison created, Harrison took the job.
Deciding to make the soundtrack a kind of introduction to Indian music, Harrison recorded a series of short ragas at EMI's recording studio in Bombay in January 1968, then a selection of rock and other musical styles, at De Lane Lea Studios in London, England.
Timing the segments with a stopwatch as he watched the unfinished film, Harrison built up a varied musical programme.
The soundtrack album ("Wonderwall Music"), the first "solo" Beatles record, was released in November 1968 by Apple Records as the company's first LP.
"Wonderwall Music" also appeared on compact disc in 1992, during reissues of the Apple catalogue.