Mardis Gras arrives next week on March 1, so here we present two in-depth conversations with leading musicians and culture keepers from the heart of Cajun country. Louis Michot, fiddler and singer with the innovative Lost Bayou Ramblers is collaborating with former members of The Pogues and working on sustainable systems for hard-hit Louisiana communities. Joel Savoy, scion of the first family of Cajun music, talks about his personal interpretation of tradition.