What would make the venerable Cleveland Pops get tangled up with a bunch of cowboys like the Texas Tenors? Sure, in their leather dusters, black Stetsons, and brocade vests, the trio serves up the suave appeal of Bret Maverick. And after their 2009 breakout performance on America’s Got Talent — followed by two CDs and an international tour — they have a rootin,’ tootin’ fan base. But performing with the orchestra? Really? Cleveland Pops conductor Carl Topilow doesn’t see a problem. “The guys have world-class voices. They perform everything from country to classical with equal ease and flair. Our orchestra performs that same range of diverse styles in every concert we do, so the matchup with the tenors makes perfect sense.” Turns out, this ain’t the boys’ first rodeo neither: John Hagen once sang Othello with the Cleveland Opera, J.C. Fisher performed in Italy’s Puccini festival, and Marcus Collins was in the NYC cast of Hairspray. They’re riding into Severance Hall tonight at 8 p.m. Tix are $19 to $78 by phone or online.