UGK was an American hip hop duo from Port Arthur, Texas, formed in 1987, by Chad "Pimp C" Butler and Bernard "Bun B" Freeman. They released their first major-label album, Too Hard to Swallow, in 1992, followed by several other albums charting on the Billboard 200 and Top R&B/Hip-Hop Albums charts, including the self-titled Underground Kingz album, which contained their single "International Players Anthem " and debuted at number one on the Billboard 200, in August 2007. The duo has also been featured on hit singles by several other artists, such as "Big Pimpin'" by Jay-Z and "Sippin' on Some Syrup" by Three 6 Mafia. Pimp C founded UGK Records in late 2005. On December 4, 2007, Pimp C died in his West Hollywood, California hotel room.

Trill is the debut studio album by American rapper Bun B. It was released on October 18, 2005, by Rap-a-Lot Records, Asylum Records and Atlantic Records. The record serves as Bun B's first studio release going solo, after spending years among years as a member of the Southern hip hop duo UGK throughout the most of his rap career. The album debuted at number six on the Billboard 200, with first-week sales of 118,000 copies in the United States.