Ha, I just answered your query in the other thread before seeing this one!

PEGGY SEEGER
http://www.bbc.co.uk/radio4/features/desert-island-discs/castaway/546b7d23#p00948mh

JOAN BAEZ
http://www.bbc.co.uk/radio4/features/desert-island-discs/castaway/4142c785#p0093wt3

CHRISTY MOORE
http://www.bbc.co.uk/radio4/features/desert-island-discs/castaway/e4a12ba1#b007ptxs