Both will start April 1.
Hammond, a Country Radio Hall of Fame inductee who stepped away from his job at WCYQ when he ran for office last year, will help the station with programming and music.
Brantley, who spent almost three decades at WIVK before leaving in 2010, will help with programming, sales and community relations.
Brantley and Hammond each took office last September. The commission post is technically a part-time job. The criminal court clerk seat, however, is a full-time gig.
Hammond told WBIR 10News that his role with the station will not interfere with his elected duties and that he will consult only during the evenings and weekends when he is not at the City County Building.
He said the new role also wouldn’t require him to travel outside of Knox County.
"(The criminal court clerk job) is my focus each day, and I am proud of what our team has accomplished,” Hammond said in a statement. “Working with Merle on the weekends will be another extension of my public service as I work with artists and musicians to give them the chance to have their music heard on the radio.”
Hammond also will host a show on Sunday called “From Nashville to Knoxville.”