: Ringo Starr had actually snuck off to the bathroom during the intro of the final take. He tiptoed back into the booth just in time to hit his drum fill, a moment so "magic" the band kept it.

: McCartney was driving to visit Cynthia and Julian when the melody came to him. He wanted to tell Julian, "I know you're not happy, but you'll be OK".

Upon its release, "Hey Jude" defied radio standards with its runtime.

: Decades later, Julian Lennon has expressed a "love-hate" relationship with the song. While he is thankful for the gesture, he admits it serves as a "dark reminder" of his father walking out on his family. Iconic Studio Moments

: McCartney almost cut the line "The movement you need is on your shoulder," fearing it was a cliché. John Lennon insisted he keep it, calling it the best line in the song.

The recording sessions at Trident Studios were legendary for both their innovation and their happy accidents: