The Drunken Catfish Ramblers, who will be closing this year’s festival, are, at their core, a street band. Although young in years, they have a lifetime of collective experience playing the streets of the world, the stages of the Montreal and New Orleans Jazz Fests, Merlefest, and more. They started years ago as a freight-hopping bunch of travelers swapping songs, bottles, and stories as they made their way east from California, but New Orleans was destined to play host to their signature sound. Their sets comprise a cross section of the best of American vernacular music, from delta blues to Appalachian stomps to early jazz and popular songs. They treat every song like a mint condition 78, so it’s no surprise that they sound like one, too.