After hearing rumors about Kelly Clarkson joining American Idol when it returns to TV on ABC, it turns out only part of that story was right. Clarkson will return to a talent competition, but not 'Idol.' Three-time Grammy Award winner Kelly Clarkson is set to join NBC’s “The Voice” for the show’s 14th season, NBC announced Thursday. She'll be joined by fellow coaches Blake Shelton and Adam Levine on the network’s three-time Emmy Award-winning series. A fourth coach will be named at a later date.