I don't really know why an idea comes to me. But all of a sudden, an idea comes and from experience I can intuit what something means when an interesting line pops up. Or I can intuit what an interesting choice might be. And I can try a couple of different choices, and see which one feels right, and then continue the song to see where it goes.
Paul SimonIt's very helpful to start with something that's true. If you start with something that's false, you're always covering your tracks. Something simple and true, that has a lot of possibilities, is a nice way to begin.
Paul Simon