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"Hey Jude" is a song by the English rock band the Beatles that was released as a non-album single in August 1968. It was written by Paul McCartney and credited to the Lennon–McCartney partnership. The single was the Beatles' first release on their Apple record label and one of the "First Four" singles by Apple's roster of artists, marking the label's public launch. [Wikipedia]
Written by McCartney as a comfort to Julian Lennon, then five years old, during John's break-up with Cynthia. Originally 'Hey Jules', changed because 'Jude' was easier to sing. Lennon later assumed (or claimed to assume) the song was about him. Hey Jude represented Paul McCartney's most expansive composition, featuring an extended instrumental outro that would become one of the Beatles' most recognizable musical moments. Originally written as a comfort song for Cilla Black's son, the composition evolved into an seven-minute orchestral epic with audience sing-along potential. (Beatles - the double-disc set popularly known as the 'White Album' because of its blank Kozinn 1995, p.175)
Sessions began at EMI on 29–30 July 1968 (rehearsal/demos) and were completed at Trident Studios in Soho on 31 July and 1 August — the Beatles' first work on Trident's new 8-track Ampex AG-440 machine. A 36-piece orchestra was assembled for the four-minute coda; the players were paid double-scale on the condition that they stand and sing 'Na, na, na' on the run-out. (Half the orchestra refused, took the single fee, and went home.) The extended length and orchestral arrangement required careful session planning and overdubbing strategy. George Martin's orchestration built gradually from the intimate opening to the climactic final sections. The session captured multiple takes to achieve the desired build and emotional arc. (r very unhappy Beatles gathered around a flustered Ken Scott, who was tweaking the controls Emerick 2006, p.669)