A day after announcing a keynote address from Pink Floyd's Roger Waters and a featured session from Curtis "50 Cent" Jackson, South by Southwest Music Festival organizers have released the second list of artists who will perform at the festival. Highlights include early English art punk outfit, Wire and fellow Brit, Tim Burgess, best known as lead singer of the '90s rock band, the Charlatans. Nasty Cherry, the L.A.-based girl group that pop star Charli XCX assembled and signed to her label will be heading to the festival, as will folk artist and former Carolina Chocolate Drop, Dom Flemons...