Music legend T-Bone Burnett is leaving his behind-the-scenes role on country music TV series Nashville to focus on other projects. The critically-acclaimed producer, who is married to Nashville creator Callie Khouri, served as the hit show's music guru throughout the first season, working on more than 100 original recordings and mentoring stars including Connie Britton and Hayden Panettiere. However, the in-demand hitmaker is now quitting his job as executive music producer to work on a new album with Sir Elton John as well as the soundtrack for the Coen brothers' new movie Inside Llewyn Davis, according to The Hollywood Reporter. A statement from Burnett's manager reads, "His slate of other film, television and recording projects would have made it impossible for him to return for a second season. He became close to many of the actors on Nashville, and wishes all of them - as well as the show's producers, writers and crew - all the best with the coming season."