Lennon–McCartney was the songwriting partnership between English musicians John Lennon (1940–1980) and Paul McCartney (born 1942) of the Beatles. It is widely considered one of the greatest, best known and most successful musical collaborations ever by records sold, with the Beatles selling over 600 million records worldwide as of 2004.Between 5 October 1962 and 8 May 1970, the partnership published approximately 180 jointly credited songs, of which the vast majority were recorded by the Beatles, forming the bulk of their catalogue. By an agreement made before the Beatles became famous, Lennon and McCartney were credited equally with songs that either one of them wrote while their partnership lasted.Lennon–McCartney compositions have been the subject of numerous cover versions. According to Guinness World Records, "Yesterday" has been recorded by more musicians than any other song