Until Scott Joplin, ragtime music was regarded as low class and unrefined. His compositions--such as "Maple Leaf Rag"--helped ragtime earn national prominence in the early 1900s, but it was not until the 1970s, that Joplin was award posthumously the Pulitzer Prize for his opera Treemonisha.
So...this was another book checked out from the library in the Juvenile Biography section. It was a great overview of Scott Joplin and had really wonderful photos. I think this series of "Black Americans of Achievement" is really quite wonderful, and the introduction by Coretta Scott King is inspirational. If I were still a K-12 history teacher, I would definitely have these at my fingertips...