Mardi Gras Indians, African dance, brass bands, luscious jazz, soul-funk, Latin jazz and West African highlife – all these are in store for music fans at the 12th annual Congo Square Rhythms Festival, presented by the New Orleans Jazz & Heritage Foundation November 16-17 in Armstrong Park.  Celebrating the New Orleans traditions that spring from the African diaspora, the Congo Square Rhythms Festival brings a joyful noise to the spot that those in the know consider the birthplace of American music..