A story from years ago. The MC (I'm unsure of gender) is assigned (I think as part of drama class) to work backstage in a high school play (or it could be musical). A scene I remember is that MC was crawling around above the stage watching the actors practice. MC was up there, I think, figuring out how to operate spotlights or maybe stage curtains. I remember neither the title nor the author, and would like to re-read the story.