Fifty years ago, a spontaneous studio collaboration produced one of the most recognizable rock songs of the 1970s—thanks to a surprising co-writer.

The Beatles' 1970 hit "Let It Be," off the band's final record of the same name, made its debut 56 years ago. TheBeatles.com ...

Half a century ago, a powerful rock ballad emerged that carried the unmistakable emotional depth and melodic brilliance fans associated with the Beatles era. Few listeners realized that the spirit of ...