"Jolie Blonde" is the most loved and most played Cajun Song. It's also known as "Jole Blon." Here's Waylon Thibodeaux's rendition:
For the song lyrics in Acadian French and English, go to Jo-El Sonnier's version. Regretfully, I found no "Jolie Blonde" instrumental involving the accordion. Or maybe, it's just as well, given the reception that accordion music may get.