Just finished Episode 2 of "Country Music" on PBS. The episode is almost as much about radio as it is about Country Music. Covers the 'Barn Dances' and actually gets into an aside on radio regulations during the depression. By memory, some of the stations were WSM, WHN, WLS, WSB, KVOO, WPTF, and of course XERA and the Carters. What is interesting is how many are still carrying the original call letters. And looking at the equipment for a remote, I sometimes wonder how they ever got it to work. I could on;y wonder what Ken Burns could do if he set his sights on just radio.