This song captures a beautiful, quiet moment of artistic creation inspired by love. The singer sits watching the sunset, feeling the "rhythm of the world" inside him. In this enchanted state, he feels a song being born all by itself, flowing from the images and feelings within him.
This "new song" is a secret gift for someone special, a "her." The lyrics reveal a tender and slightly sad secret: she is sleeping, completely unaware of his presence and the music he is creating for her. He even wonders if she will ever hear it. It's a song about the intimate, personal process of turning deep, unspoken feelings into art, even if the person who inspired it never knows.