If you already have a piece of music ingrained in your body, why would you not play it?
I don't remember my father reading to me, but I remember him telling me bedtime stories. I got to pick what was in them, and then he'd make them up.
I think the same way about theatre, you go out there and you are creating a world for a moment that can actually have a real impact on people, present some kind of story that gives you something to think about when you walk away, feeling enriched - if it works out well.

