Joni Mitchell took the stage and stole the show at the Newport Folk Festival over the July 24 weekend. In a surprise performance, the music great made an unscheduled appearance with rocker Brandi Carlile, playing a full set, including a guitar solo. It was Mitchell's first show in 20 years.
Where has Mitchell been this whole time? Why does the festival have a particular hold on the performer, and why does Mitchell have such a hold on us culturally?
