Probably the most famous Cajun song of all time is Jole Blon (it means pretty girl). I've heard it called everything from Jody Bond to Jolly Bong.
Others include: Lay Your Head On My Shoulder (For the Good Times)
Oh, My Love, My Darling (Unchained Melody)
Kiss Me Each Morning (Then You Can Tell Me Goodbye)
In a God and Devita (figure it out!)

Years ago, when my oldest son was very young, he had listened to one of my tapes and later told me, Daddy I really like that song "Wanna See". It took me a while to figure out he was talking about Ray Charles' Wha'd I Say?
DonM