Mississippi Hare is a 1949 Looney Tunes cartoon directed by Chuck Jones and starring Bugs Bunny.
In the story, Bugs Bunny, asleep in a cotton field, is picked up by his cottony tail (which a worker mistakes for actual cotton) and bundled into a shipment put on a riverboat going down the Mississippi River (setting sail for Memphis, Vicksburg, Baton Rouge, New Orleans and Cuc-amonga). The cotton-picking scene is accompanied by presumably African-American voices singing "Dixie".