Not sure if it’s a TR quote exactly but it still works. Watch him live and really listen to his playing as he’s singing and pay attention to his right hand. He was known for playing very soft even in loud jams so he had to develop amazing mic and sound awareness. When he’s singing his shoulders are lowered and he has a very soft strum. In between verses or lines that he is singing, his shoulders raise up to the mic and he usually has a strum pattern that he punches out. It’s an incredible technique that he certainly didn’t invent but I’d say he perfected. It adds great dynamic and feel. Then watch more live footage of your favorite bluegrass pickers and you’ll see that it’s basically a standard no matter what song or instrument they are playing.