How Has Your Understanding of Songwriting Progressed Over the Long Ard of Interviews?

Singer-songwriters have been interviewed over 200 times for the show. What do they see and hear now that you didn't before? And what has become clearer, and what remains stubbornly mysterious? There's still always that mysterious element, that kind of magical moment where there was nothing before,. All of a sudden, within a few minutes, there's something.