“First take a play that you like and musicalize it. Then take a play that you like but you feel has flaws and try to improve them, and musicalize it,” Sondheim recalled him saying. “Then he said, ‘Take something that is not a play but that somebody else has written, a novel or a short story, so that you don’t have to invent the characters or plot, and musicalize that, make it into a play. Dramatize it. And then finally write an original, your own story, and dramatize that.”