Clarkson, Richie to star in ABC's 'Duets' LOS ANGELES, March 9 (UPI) -- Kelly Clarkson, Jennifer Nettles, Lionel Richie and Robin Thicke are to star in the new U.S. music competition series "Duets," ABC said. The series is to debut this summer on the network. Clarkson, Nettles, Richie and Thicke will individually set out across America looking for undiscovered talent worthy of being their proteges, a synopsis said. "Ultimately, each superstar will choose two singers to be his/her duet partners," the synopsis said. Together the superstars and their proteges will take the stage each week and perform in front of a live studio audience. In the end, only one duet will be at the top of the charts, and the winning amateur will receive a recording contract with Hollywood Records.