"Let It Be" (1970)
The Let It Be album, released in 1970 shortly after the band officially broke up, was the Fab Four's swan song. This single was a huge hit around the world, reaching number one in America and number two in the U.K. Paul was inspired to write it following a dream he had of his mother (Mary), who died when he was 14. The song's theme of surrendering and letting go touched a chord with millions of fans. "Let It Be" is often played at funerals, due to its hopeful, farewell message.