Soulive and Lettuce will co-headline a Royal Family Ball during New Orleans’ JazzFest. The Royal Family records celebration will take place at New Orleans’ Howlin’ Wolf on Thursday, May 2. Nigel Hall & Alicia Chakour, London Souls and other guests are also slated to perform. Intertwined bands Soulive and Lettuce have taken their Royal Family Ball concept on the road in recent years.