Music has been an instrument of global diplomacy since the Cold War era. But critics say it's ineffective and misguided. Today, our Soundcheck Smackdown debate focuses on music as a diplomatic tool, from Cuba to North Korea. Also: The Red Fox Chasers were hitmakers back in the late 1920s. Now, their classic American string band music is back, courtesy of the group The Dust Busters. They perform live in our studio.