Paul McCartney famously composed the melody for 'Yesterday' in a dream while staying at the home of his girlfriend Jane Asher. Fearing he had subconsciously plagiarized someone else's work, he spent weeks asking music industry insiders if they recognized the tune. The original working title was 'Scrambled Eggs,' with the placeholder lyrics 'Scrambled eggs, Oh, my baby how I love your legs.' When it was finally recorded for the 'Help!' album, it marked a significant departure for The Beatles, featuring only McCartney on acoustic guitar accompanied by a string quartet. This was the first time any member of the band recorded without the others. Despite being a solo performance by Paul, it was credited to Lennon-McCartney. According to Guinness World Records, it remains the most covered song in the history of recorded music, with over 2,200 versions by various artists.