John Lennon (in 1972) - "Paul. But I think maybe I helped him with some of the lyric."
John Lennon (in 1980) - "'Good Day Sunshine' is Paul's. Maybe I threw in a line or something."
Paul McCartney (in 1984) - "Wrote that out at John's one day... the sun was shining. Influenced by the Lovin' Spoonful."
Paul McCartney (in 1994) - "'Good Day Sunshine' was me trying to write something similar to 'Daydream.' John and I wrote it together at Kenwood, but it was basically mine and he helped me with it."
