Outspoken singer/songwriter Charlie Robison has decided not to be a judge on the second season of the USA Network show Nashville Star. Charlie said he "had a blast" as a judge of the show's first installment, but he's got too much going on to make the commitment again. "The timing is not good for me this time around," explains Charlie, who will be busy with a new tour and taking care of his son, Gus, with wife Emily Robison, a member of the Dixie Chicks. "I want to focus on my own career and my family."