The Beatles - thank you girl, 1963

"Originally titled "Thank You, Little Girl", the song was written by John Lennon and Paul McCartney as a tribute to the band's many female fans. McCartney said, "We knew that if we wrote a song called, 'Thank You Girl', that a lot of the girls who wrote us fan letters would take it as a genuine 'thank you'. So a lot of our songs were directly addressed to the fans." Written “eyeball to eyeball", a phrase Lennon and McCartney would later use to describe their early formulaic writing sessions, "Thank You Girl" demonstrates how they were able to produce a song from scratch by working in total partnership."