Thistle And Shamrock: Common Currency By editor • Nov 7, 2012 TweetShareGoogle+Email Rua. Courtesy of the artist Originally published on November 10, 2012 6:41 pm Follow the instrumental links and song-streams that connect musical traditions across miles and oceans.Copyright 2012 National Public Radio. To see more, visit http://www.npr.org/. TweetShareGoogle+EmailView the discussion thread.