Author Edward A. Berlin offers insightful commentary on each of all of Joplin's works, showing his influence on other ragtime and non-ragtime composers. He traces too Joplin's continued music studies late in life, and how these reflect his dedication to education and probably account for the radical changes that occur in his last few rags. And he puts new emphasis on Joplin's efforts in musical theater, bringing in early versions of his Ragtime Dance and its precedents. Joplin's wife Freddie is shown to be a major inspiration to his opera Treemonisha, with her family background and values being reflected in that work. Joplin's reputation faded in the 1920s-30s, but interest in his music slowly re-emerged in the 1940s and gradually built toward a spectacular revival in the 1970s, when major battles ensued for possession of rights.