Jonathan Harris describes their "brightly coloured parodies of military uniforms" as a knowingly "anti-authoritarian and anti-establishment" display. Sgt. Pepper topped the UK charts for 23 consecutive weeks, with a further four weeks at number one in the period through to February 1968. With 2.5 million copies sold within three months of its release, Sgt. Peppers initial commercial success exceeded that of all previous Beatles albums. It sustained its immense popularity into the 21st century while breaking numerous sales records. In 2003, Rolling Stone ranked Sgt. Pepper at number one on its list of the greatest albums of all time. Magical Mystery Tour and Yellow Submarine Two Beatles film projects were conceived within weeks of completing Sgt. Pepper: Magical Mystery Tour, a one-hour television film, and Yellow Submarine, an animated feature-length film produced by United Artists. The group began recording music for the former in late April 1967, but the project then lay dormant as they focused on recording songs for the latter. On 25 June, the Beatles performed their forthcoming single "All You Need Is Love" to an estimated 350 million viewers on Our World, the first live global television link. Released a week later, during the Summer of Love, the song was adopted as a flower power anthem. The Beatles' use of psychedelic drugs was at its height during that summer. In July and August, the group pursued interests related to similar utopian-based ideology, including a week-long investigation into the possibility of starting an island-based commune off the coast of Greece. On 24 August, the group were introduced to Maharishi Mahesh Yogi in London. The next day, they travelled to Bangor for his Transcendental Meditation retreat. On 27 August, their manager's assistant, Peter Brown, phoned to inform them that Epstein had died. The coroner ruled the death an accidental carbitol overdose, although it was widely rumoured to be a suicide. His death left the group disoriented and fearful about the future. Lennon recalled: "We collapsed. I knew that we were in trouble then. I didn't really have any misconceptions about our ability to do anything other than play music, and I was scared. I thought, 'We've fuckin' had it now. Harrison's then-wife Pattie Boyd remembered that "Paul and George were in complete shock. I don't think it could have been worse if they had heard that their own fathers had dropped dead." During a band meeting in September, McCartney