Bill Self wrote about a bluegrass radio station in Missouri that received a unique phone call. The caller said to the DJ, “Hello, I am a farmer living alone on my farm. My wife is dead. And my children and grandchildren have moved away; I don’t see them very much. There are three things in my life that give me comfort: One is the farm. Second is my radio. The third is my fiddle. Sometimes in the night, when you are playing songs that I know and love, I get out my fiddle and play along with you. It brings me great comfort. But recently, my fiddle has gotten out of tune. The A string doesn’t work like it should, and I don’t have a tuning fork so there is no way I can get my fiddle back in tune. Would you mind playing the A note on your next program? If you will do this, I can tune my fiddle…