Last night’s 50th annual ACM Awards made the Guinness Book of World Records for being the most attended live awards show ever. Thousands of country stars and fans packed the AT&T Stadium in Dallas, and the crowd’s energy level was off the charts. Performances included everyone from George Straight and Garth Brooks, to newcomers Thomas Rhett, Sam Hunt and Best New Artist Winner Cole Swindell.

One highlight of the night was when Dan + Shay took the stage with Nick Jonas. They performed a special mashup of their hit “Nothin’ Like You,” along with Nick’s solo tracks “Jealous” and “Chains.” When we first heard they were performing together, we weren’t quite sure what to expect with such different sounds. But the mashup, produced by Dan Smyers, perfectly mixed the songs and genres together, with a stellar 3-part harmony. And of course there’s nothing like Shay Mooney’s voice (chills, every time.)

Watch the performance below!