I haven't seen this video but I did notice that Homespun now sells a bluegrass singing instructional video by Peter Rowan. I'm guessing that Peter emphasizes the sort of voice-saving and voice-enhancing techniques that the best trained singers among us have recommended.

I don't know how Bill Monroe trained his voice but when you listen to Mac Wiseman or the late Charlie Waller, you know they didn't just belt out a song.

      - Mark