The songwriting partnership of John Lennon and Paul McCartney is widely regarded as the most successful musical collaboration ever by records sold. The principal writing team behind the Beatles, Lennon and McCartney are responsible for composing numerous Beatles hits, many of which rank among the greatest pieces of music ever created in the modern era. But did you know that Lennon-McCartney didn't record everything that they penned, and instead offered up their compositions to other artists?
Click through and find out who else sang songs written by Lennon and McCartney.