The introduction to ragtime music fits into what theme in The Autobiography of an Ex-Colored Man? hard work wealth art and culture education

Answer: art and culture

The introduction to ragtime music most likely relates to the theme of art and culture.

Ragtime is a type of music developed by African Americans in St. Louis and New Orleans. It became very popular in the 19th and 20th century, and is often considered to have paved the way for jazz music. It was a type of music that was meant to be danced, and therefore, contributed to the cultural and social evolution of these cities. Ragtime is also considered to have been derived from the music of plantations.