Blake Shelton and Post Malone SURPRISE CMA Fest Crowd With New Song

Blake Shelton and Post Malone sang 'Somebody Pour Me a Drink' to the CMA Fest crowd on Thursday night. ET was exclusively backstage at the event, chatting with Thomas Rhett and Jordan Davis. Highlights from CMA Fest will air June 25 on ABC, in a special hosted by Jelly Roll and Ashley McBryde.