Who wrote the 1966 Beatles song that went on to number one in seven countries?
Rain (Beatles song): "Rain" is a song by the English rock band the Beatles first released in May 1966 as the B-side of the "Paperback Writer" single. Paperback Writer:  Written by Paul McCartney and John Lennon (credited to Lennon–McCartney), the song was released as the A-side of their eleventh single. Paperback Writer:  The single went to the number one spot in the United States, United Kingdom, Ireland, West Germany, Australia, New Zealand and Norway.
Paul McCartney and John Lennon