Emmylou Harris (born April 2, 1947) is an American country, folk, alternative rock, and alternative country musician. [...]

In 1997 and 1998, Harris performed in Sarah McLachlan's Lilith Fair, promoting feminism in music. Since 1999, Harris has been organizing an annual benefit tour called Concerts for a Landmine Free World. All proceeds from the tours support the Vietnam Veterans of America Foundation's (VVAF) efforts to assist innocent victims of conflicts around the world. The tour also benefits the VVAF's work to raise America's awareness of the global landmine problem.

http://en.wikipedia.org/wiki/Emmylou_Harris

Official site: http://www.emmylouharris.com/