Trace Adkins will reunite with rocker and fellow reality-TV star Gene Simmons for this week's episode of A&E's "Gene Simmons Family Jewels." The pair became fast friends in 2008 while competing on NBC's 'Celebrity Apprentice'.

In an episode titled 'Rootin' Tootin' Gene,' the KISS frontman travels to Nashville as a favor to the group's manager. While in Music City, he takes a new -- and bickering -- country group under his wing. Trace surprises Gene with a visit to the recording studio, and shares some of his expert advice on the music business.

"I love Gene Simmons," Trace told The Boot after 'Celebrity Apprentice' had ended. "Just the opportunity to get to hang out with him and listen to his stories ... It was a once in a lifetime opportunity."

The episode of 'Gene Simmons Family Jewels' featuring Trace premieres Sunday, Aug. 9, at 9:30 PM ET on A&E.