Kacey Musgraves announced to the crowd midway through her set, "It's like country and emo mixing perfectly, and I love it," then called co-headliner Conor Oberst onstage Saturday night at Brooklyn's Northside Festival in Williamsburg. Oberst then joined Musgraves for a spontaneous duet on Hank Williams' "Hey Good Lookin'," capping off an evening of compelling collaborations that may have seemed incongruous on paper. Instead, Musgraves and Oberst came across as easy-fitting, long-standing musical companions, with each professing their mutual admiration throughout the evening. Oberst gushed while on stage, "I've been a really big fan of Kacey's since I first listened to her record." The two then proceeded to sing an off-the-cuff take on Musgraves hit "Back on the Map."
