The term Joplin Work refers to the musical compositions of American composer and pianist Scott Joplin. The term RAG, which is a 3 letter solution for this crossword, is a type of musical composition that was popularized by Joplin. Ragtime music is characterized by its syncopated rhythms and often features a piano as the main instrument. Joplin's works are considered some of the most influential pieces of ragtime music ever written.