John Lennon (in 1980) - "That's Paul's song. He was trying to write a 'Soldier Boy' like the Shirelles. He wrote that in Germany, or when we were going to and from Hamburg. I might have contributed something. I can't remember anything in particular. It was mainly his song."
Paul McCartney (in 1994) - "A theme song based on a letter... It was pretty much mine. I don't think John had much of a hand in it. There are certain themes that are easier than others to hang a song on, and a letter is one of them... It's not based in reality, nor did I write it to my girlfriend from Hamburg, which some people think."
