The author of the book “Once More with Feeling” is Elissa Sussman. This is a novel. The story is about The protagonist, Katee Rose, who is America’s number-one pop star. After a scandal, she becomes involved with her boyfriend and another band member. As a result, he left behind his pop star image. Just a few years later, Cal Kirby offered her a role in a Broadway show. He is managing that now.