Why "creeping out of the shadows"?

As I was driving along a Cotswold lane, one morning, listening to Radio 3, the announcer was discussing a programme of music to be played later that day on the station. He described the music as "creeping out of the shadows" and immediately I knew this was exactly the phrase I'd been looking for to describe Paul's work, and indeed him! He is very modest about his talent and doesn't like to push himself forward into the limelight, but I know that his work deserves recognition. By exhibiting and discussing his work we're ensuring that the process of creeping out of the shadows is a worthwhile and productive one for him, and will inspire him to greater things!