From NewOrleans.com: 
Tremé and the 7th Ward have given life to some of New Orleans’ (and the world’s) most famous works of art, music, and culture. To celebrate these historic, thriving areas, the Tremé/7th Ward  neighborhoods host an annual, free spring festival (usually every  Memorial Day Weekend) that features neighborhood tours, bar crawls, a  Gospel breakfast, and a Congo Square second line! 
  Under the Bridges Arts and Culture Festival  
 This free two-day music festival is open to the public and takes  place in the spring under I-10 between Basin Street & St. Bernard  Avenue along North Claiborne Avenue. Attendees can expect to see live  music legends, local cuisine, and crafts, as well as community  organizations and city partners who will share the history and  significance of these neighborhoods. 
  Additional Information  
 Attendees will have the opportunity to participate in a Gospel  breakfast, Congo Square second line, tours of the neighborhoods, panel  discussions, and more.