Dolly Parton's greatest songs, and the stories behind them

Dolly Parton was more than a musician, actor, author, philanthropist, or theme-park entrepreneur. Parton, who died Tuesday at age 80, occupied a space in our global cultural imagination — a figure of American mythology, someone best described as larger-than-life and then a little bit more. But from the very beginning, at the heart of everything she accomplished, she was a songwriter.