Jason Aldean and "Duck Dynasty's" Willie Robertson made a surprise appearance at Luke Bryan's concert in Dallas earlier this month. Don’t get too excited they weren’t there to perform they were there to have a little fun with the “Crash my Party” singer. About 2 minutes into the song “Country Girl (Shake it for me)” both Jason and Willie come on stage and bring a bunch of half-naked dudes on stage so they could shake it for the crowd.