Music is a total constant. That's why we have such a strong visceral connection to it, you know? Because a song can take you back instantly to a moment, or a place, or even a person. No matter what else has changed in your or the world, that one song says the same, just like that moment.
I'm not going to be like, "I gotta get this idea out of my head. " It's like, "OK, here's a clean slate, and I've got all these paints, and all these brushes, and this is what I'm going to do with it. " It reveals itself, and you take a step back and say, "What's happening here? Where are we going? What does this mean? Do I need to break it open? Does it need to just be what it is? Should it end now?"