CMT will film a concert of popular country duets on June 8 in Nashville just prior to the CMA Music Festival. The concert will be included in the upcoming CMT special 100 Greatest Duets, scheduled to air in September, and will feature the Top 12 songs in the countdown. Artists slated to perform at the concert include Trace Adkins, Clint Black, Lisa Hartman-Black, Crystal Gayle, Rebecca Lynn Howard, Shooter Jennings, Miranda Lambert, Montgomery Gentry, Joe Nichols, Blake Shelton, Marty Stuart, Travis Tritt and Lee Ann Womack. Raul Malo will serve as music director. Tickets go on sale May 6 on CMT.com and Ticketmaster.