The Friday night show at Evanston's Cahn Auditorium was not what I had expected. I had front-row seats to see Emmylou Harris, my third time seeing the country superstar. But this show was less about Ms. Harris than Verlon Thompson and Shawn Camp.

Thompson performed with the late Guy Clark for years, and Camp produced some of Clark's albums. This evening, the trio focused on the music of Guy Clark.

Emmylou's name topped the bill, but Thompson and Camp led for much of the evening, taking turns singing lead with impressive guitar work, while Harris provided harmony vocals.

As a longtime fan of Guy Clark, I appreciated their selection of songs, which spanned the singer-songwriter's long career and included "Dublin Blues," "Let Him Roll," "Stuff That Works," and "LA Freeway." They bookended "Desperados Waiting for a Train" with "Red River Valley" - a traditional song that figures prominently in the lyrics of "Desperados."

Harris included some favorites outside the Clark catalog, notably her covers of Townes Van Zandt's "Pancho and Lefty" and "If I Needed You."

Although the show was not what I expected, I enjoyed the evening immensely.