Conversation so far:
What music did Scott Joplin rejuvinate?
Scott Joplin and his fellow ragtime composers rejuvenated American popular music, fostering an appreciation for African-American music among European-Americans by creating exhilarating and liberating dance tunes.
How much money did Scott Joplin die with?
Scott Joplin was penniless and disappointed at the end of his life

Question: What was ragtime music?
Self-contained rewrite: What was ragtime music?