Producer: Jason "Jay E" Epperson

At the decade's onset, Southern rap was just becoming a viable commodity for the hip-hop community, and it took years for that to happen. So the last thing anyone expected was for this guy from the Midwest to come out of St. Louis and take over the rap game, but great songs help defy expectations. "Country Grammar" had street content, but the nursery rhyme hook made it equally irresistible to pop audiences, pushing sales of the album of the same name past 9 million.

The "Down Down Baby" refrain is taken from the popular children's song "Roller Coaster." St. Louis rapper Jibbs tried to repeat a similar kiddie sing-along formula in 2006 with his hit "Chain Hang Low."