This past Thursday at the Grammy Foundation’s Living Histories event at the Skirball Cultural Center in Los Angeles, CA, Eric Church joined Gregg Allman for a Q&A session and performances.

Each artist played their own short sets, with Church covering Allman’s “Win, Lose or Draw,” which he had also recorded for the All My Friends: Celebrating the Songs & Voice of Gregg Allman compilation album.

The two also collaborated on a acoustic run of The Allman Brothers’ “Midnight Rider,” and Church says, he wasn’t prepared for the version that Allman decided to play.

“Last night, I worked on ‘Midnight Rider,’ which I’ve played a hundred times. Maybe a thousand,” he said during the Q&A. “So I’m getting ready to walk up on stage, and Gregg goes, ‘Hey, we’re not going to do it the way the Brothers do it.’ I about shit in my pants.”