Possible Clues:

• Legendary folk singer Joan
• Folk artist Joan
• See 19
• Joan --, singer-songwriter whose albums include 'Diamonds & Rust'
• She performed while six months pregnant at Woodstock
• One of the first to record Dylan's songs
• She performed 'We Shall Overcome' at the 1963 March on Washington
• Folk singer and protester Joan
• Folkie Joan
• "Diamonds and Rust" Joan