Oh, sorry I forgot to add this to last message. There are two very good books: 1) "Cajun Music A Reflection Of A People" by Ann Savoy. the ISBN is 0-930169-00-x.
2) " Ye Yaille, Chere" by Raymond E Francois. ISNB 0-9625542-0-0.
These are the Cajun bibles. They contain all the songs, chords and a history of the artists. The second book can be ordered off of amazon.