Cajun music is often associated with folk music. In some ways, that is an accurate description, but it is also an ever-evolving history of a people.
South Louisiana has a combination of different dialects from the French language. There are three main dialects: the French that came from the French descendants who first settled Louisiana in 1699, the Creole which came from descendants of the African settlers and the Acadians that wandered south to New Orleans area, and Cajun French that came from the descendants of Acadians who settled in the bayous. The languages eventually changed to reflect the areas where the groups had settled and had frequent interactions. However, the Cajuns who lived along the Bayou Teche spoke Creole just like their Creole neighbors. After the Louisiana Purchase, French Louisiana was forced to adapt the language and culture of the United States.