marked one of the band's most prolific periods, yielding numerous songs, including a majority of those on their next album. However, Starr left after only ten days, unable to stomach the food, and McCartney eventually grew bored and departed a month later. For Lennon and Harrison, creativity turned to question when an electronics technician known as Magic Alex suggested that the Maharishi was attempting to manipulate them. When he alleged that the Maharishi had made sexual advances to women attendees, a persuaded Lennon left abruptly just two months into the course, bringing an unconvinced Harrison and the remainder of the group's entourage with him. In anger, Lennon wrote a scathing song titled "Maharishi", renamed "Sexy Sadie" to avoid potential legal issues. McCartney said, "We made a mistake. We thought there was more to him than there was." In May, Lennon and McCartney travelled to New York for the public unveiling of the Beatles' new business venture, Apple Corps. It was initially formed several months earlier as part of a plan to create a tax-effective business structure, but the band then desired to extend the corporation to other pursuits, including record distribution, peace activism, and education. McCartney described Apple as "rather like a Western communism". The enterprise drained the group financially with a series of unsuccessful projects handled largely by members of the Beatles' entourage, who were given their jobs regardless of talent and experience. Among its numerous subsidiaries were Apple Electronics, established to foster technological innovations with Magic Alex at the head, and Apple Retailing, which opened the short-lived Apple Boutique in London. Harrison later said, "Basically, it was chaos ... John and Paul got carried away with the idea and blew millions, and Ringo and I just had to go along with it." From late May to mid-October 1968, the group recorded what became The Beatles, a double LP commonly known as "the White Album" for its virtually featureless cover. During this time, relations between the members grew openly divisive. Starr quit for two weeks, leaving his bandmates to record "Back in the U.S.S.R." and "Dear Prudence" as a trio, with McCartney filling in on drums. Lennon had lost interest in collaborating with McCartney, whose contribution "Ob-La-Di, Ob-La-Da" he scorned as "granny music shit". Tensions were further aggravated by Lennon's romantic preoccupation with avant-garde artist Yoko Ono, whom he insisted on bringing to the sessions despite the group's well-established