Over the first six years of his life, I must have read "Goodnight Moon" to my son a thousand times, maybe more. Somewhere around reading number 500 I began hearing little musical fragments as I read, and over time those fragments began to blossom into a simple, sweet lullaby. I knew it was a long shot, but I asked my manager, Claire Long, to contact HarperCollins and see if they would allow the text to be set to music. To my surprise and delight they agreed – the first time they had ever allowed...