For rap star Bun B, “trill” (that is, to be true and real) is a way of life. As UGK, he and fellow Port Arthur, Texas, native Pimp C have treated it as a tao since the release of their 1992 debut, Too Hard to Swallow. Despite setbacks (Pimp C’s incarceration and suspicious 2007 death), Bun B helped bring UGK out of the underground and into hip-hop’s spotlight, releasing solo albums and appearing on tracks by Paul Wall and Yung Joc. Now one of hip-hop’s wise elder statesmen (he’s teaching a class at Houston’s Rice University on the subject), Bun B remains a supremely respected relic among the genre’s new generation. His rolling success has culminated in the Trillest Tour, which will bring the bass-heavy, trunk-rattling brutal honesty of his music to the Howard Theatre stage. Joining him as the tour’s co-headliner will be Houston rapper Kirko Bangz, a UGK disciple whose syrupy 2011 breakthrough “Drank In My Cup” was inspired by the group’s sensibilities. Bun B performs with Kirko Bangz at 8:30 p.m. at Howard Theatre, 620 T St. NW. $15–$50. (202) 803-2899.