As Blake Shelton was headlining a gig at the Grand Ole Opry last night (June 8), the Oak Ridge Boys were doing the same thing across town at Ascend Amphitheater.

Once the Oaks finished their set, they hopped on their bus and motored over to the Opry, where they joined Blake onstage for a rendition of “Doing It to Country Songs” before transitioning into crowd-favorite “Elvira.”

Watch Blake and Oak Ridge Boys in action.