Ragtime is a musical genre that is best known for its syncopated rhythms, and it enjoyed immense popularity between 1895-1918. Originating from African-American communities such as St. Louis and influenced in part by the marches of John Philip Sousa and polyrhythmic African music, ragtime began to spread as pioneers such as Ernest Hogan (1865-1909) and Scott Joplin (ca. 1868-1917) began publishing ragtime pieces as sheet music. Though ragtime was supplanted by jazz as the 20th century progressed, it enjoyed revivals in the 1940s, 1950s, and 1970s. The genre was even influential to classical composers of the 20th century such as Dvoràk, Debussy, and Satie.