Great fun to watch, Jack. It would be so difficult for me to give a play-by-play of my own songwriting process(es)---too much of it is so very random, and probably all of it is a wordless endeavor. If someone were to ask me why I just changed the chord I was playing while I was writing, I think I would snap out of my trance and lose the song.

It's great to see how you do it. My process seems to involve a lot more stumbling and luck.