The music legend had to drop out of the show due to ''scheduling conflicts'' but bosses have lined up singer/songwriter John to take his place alongside Jennifer Nettles and Robin Thicke on the upcoming ABC series, which is set to debut this summer.
The official synopsis for the show reads: ''The series is a one-of a kind singing competition that takes the Superstars out from behind the judges' panel and onto the stage. Clarkson, Legend, Nettles and Thicke individually set out on a Journey across America looking for undiscovered talent worthy of being their duet partners. Ultimately, each Superstar will choose two singers to be his/her partners. Together the Superstars and their partners 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 partner will receive a recording contract with Hollywood Records.''
Speaking about her involvement previously, Kelly said in a statement: ''The simple fact that I get to go out and find two people that I believe in, sing with them every week, and help them accomplish their dream is an amazing thing that I can't wait to be a part of.''