Country rock icon John Mellencamp is to join John Cougar, John Deere, John 3:16 singer Keith Urban for a duet at the CMA Awards next month (Nov15). Urban references the Jack & Diane singer, who used to go by the moniker John Cougar, in his new song. Thomas Rhett and Fall Out Boy will also perform together during the three-hour gala, which will open with a Hank Williams Jr. and Eric Church collaboration.