CMT concludes the top 100 countdown with a two-hour concert featuring the top 12 duet songs performed by country's biggest stars. Performers include Dolly Parton, Kenny Rogers, Travis Tritt, Patty Loveless, Carrie Underwood, Jamie O'Neal, Crystal Gayle, Shooter Jennings, Montgomery Gentry, Rebecca Lynn Howard, Keith Anderson, Joe Nichols, Blake Shelton, Miranda Lambert, Raul Malo, Terri Clark, Trace Adkins, Clint Black, Lisa Hartman-Black and Marty Stuart.