Since emerging out of its primordial ooze in Congo Square, American music of the African diaspora has thrived to such a degree that hip-hop is arguably the world’s dominant culture. From the way we speak to the way we view fine arts, its inclusive spectrum has embraced corners of the world far removed from its South Bronx birthplace of the 1970s. Here in New Orleans, one need look no further than Master P’s No Limit and Birdman’s Cash Money heydays of the late 1990s and early aughts to see th...