NEW ORLEANS (AP) — A song the writer’s bandleader hated has become one of Cajun music’s all-time greatest hits, and the writer’s home town salutes him and the song’s 55th anniversary on Sunday. D.L. Menard was 30 in 1962 when he wrote “La Porte en Arriere” (“The Back Door “) — a jaunty ditty in Cajun French about a guy who gets so drunk he has to sneak into his house through the back door. Menard says bandleader Elias Badeaux told him it stunk. But that song helped make him a goodwill ambassador for Cajun music and culture, traveling to dozens of ...