On this week's episode, listen to the inimitable Scottish folk singer who covers Robert Burns, a Celtic balladeer and an Irish folk singer who adds contemporary twists to traditional songs.
The young musician, whose career has begun to fully blossom, charts his own course, with successful stops at the Tchaikovsky Competition and Harvard University.
The National Anthem is easy to get wrong, and pop star Fergie's rendition before Sunday's NBA All-Star game was all sorts of wrong. The Grammy winner said afterwards she was trying to do something new with her slower, jazzier version.