Atlanta rap duo Ying Yang Twins is considered one of the area's earliest and most commercially successful crunk groups of all time. Scoring hits with production from crunk music maestro Lil' Jon, the Ying Yang Twins almost single-handedly made crunk music a phenomenon in the early 2000s. The duo has gone on to score hits throughout the first decade and tour sporadically around the world, reminding people of the movement it helped start.