Nelly & Jason "Jay E" Epperson ("30 Hours")
On "30 Hours," Kanye references two hits by St. Louis veteran Nelly; first, Country Grammar's "E.I.," produced Jason "Jay E" Epperson, and then, 2002's "Hot in Herre."
"Chicago, St. Louis, St. Louis to Chicago / Àndale, àndale, E.I., E.I., uh-oh"
"Chicago, St. Louis, St. Louis to Chicago / It's getting hot in herre, that's all that I know"
Epperson is a St. Louis-hailing producer and DJ, who, along with "E.I.," produced most of Country Grammar, Nelly's debut album that has since been certified 9x platinum. Though Kanye didn't have any beats on Country Grammar, his relationship with Nelly dates back to before the album's 2000 release. In 1998, Kanye produced a song for Gangsta Boo, on which Nelly guested alongside Harlem rapper Cardan.
"30 Hours" finds Kanye recounting regular drives from Chicago to St. Louis, where he likely made beats for Nelly, or at least attempted to do so. The increment of "30 Hours," however, refers to the drive he'd experience a bit later in his career, from Chicago to L.A.; the distance between the two Midwestern cities is less than 5 hours. The entire time he was on the road, though, whether journeying to St. Louis or L.A., he was being double-crossed by his hometown sweetheart.