There is an old saying which says “Two heads are better than one.” In music, two voices are better than one, especially in country music. For episode 7 of our country and folk series Blue Highway we bring together great voices for some classic duets, both long lasting pairings and short-lived one-time performances. Listen to the lyrics for a great story. And hum along on your own harmony line. It could be gone before you know it’s there.