So writing a song is much harder than doing a classical piece for me, because in a classical piece, I can just let the mood dictate what's going to happen.
There comes a point in your life when you realize how quickly time goes by, and how quickly it has gone. Then it really speeds up exponentially. With that, I think you start to put a lot of things into context; you start to see how huge the world is, and really, the universe.