They are quite common in most forms of art seems to be the best answer for your question :)
<span>Each of the characters bear a title of a person or event at an imaginary masked ball</span>
Answer:
Each ethnic group in New Orleans contributed to the very active musical environment in the city, and in this way to the development of early jazz. A well-known example of early ethnic influences significant to the origins of jazz is the African dance and drumming tradition, which was documented in New Orleans.