"Since she stepped onstage unannounced at the 1959 Newport Folk Festival, Joan Baez has occupied a singular place in popular music. Within three years, she had recorded three best-selling albums and had embarked on a tour of southern US campuses, playing to integrated audiences in an era of segregation. When Time magazine chronicled the folk revival in November 1962, her portrait was on the cover. Her voice was \"as lustrous and rich as old gold.\" She has mentored generations of singer-songwriters, most famously Bob Dylan. But Joan Baez has always been much more than simply a singer. Even before she stood on the podium beside Dr Martin Luther King at the March on Washington, her voice was raised in sorrow and anger as well as in song. The causes for which she has campaigned are legion and it's no surprise that she was chosen to open Live Aid in Philadelphia in 1985. In 1993, amid the siege of Bosnia, she donned a flak jacket to sing for the citizens of Sarajevo offering, as so many times before and since, \"an act of love
