understanding that girlfriends were not allowed in the studio. McCartney has recalled that the album "wasn't a pleasant one to make". He and Lennon identified the sessions as the start of the band's break-up. With the record, the band executed a wider range of musical styles and broke with their recent tradition of incorporating several musical styles in one song by keeping each piece of music consistently faithful to a select genre. During the sessions, the group upgraded to an eight-track tape console, which made it easier for them to layer tracks piecemeal, while the members often recorded independently of each other, affording the album a reputation as a collection of solo recordings rather than a unified group effort. Describing the double album, Lennon later said: "Every track is an individual track; there isn't any Beatle music on it. [It's] John and the band, Paul and the band, George and the band." The sessions also produced the Beatles' longest song yet, "Hey Jude", released in August as a non-album single with "Revolution". Issued in November, the White Album was the band's first Apple Records album release, although EMI continued to own their recordings. The record attracted more than 2 million advance orders, selling nearly 4 million copies in the US in little over a month, and its tracks dominated the playlists of American radio stations. Its lyric content was the focus of much analysis by the counterculture. Despite its popularity, reviewers were largely confused by the album's content, and it failed to inspire the level of critical writing that Sgt. Pepper had. General critical opinion eventually turned in favour of the White Album, and in 2003, Rolling Stone ranked it as the tenth greatest album of all time. Abbey Road, Let It Be and separation Although Let It Be was the Beatles' final album release, it was largely recorded before Abbey Road. The project's impetus came from an idea Martin attributes to McCartney, who suggested they "record an album of new material and rehearse it, then perform it before a live audience for the very first time – on record and on film". Originally intended for a one-hour television programme to be called Beatles at Work, in the event much of the album's content came from studio work beginning in January 1969, many hours of which were captured on film by director Michael Lindsay-Hogg. Martin said that the project was