Country Music Hall of Fame member Earl Scruggs, Diamond Rio and Montgomery Gentry have been added to Sunday's (Oct. 21) Country Freedom Concert, bringing the total of confirmed live acts to 16. As the list of performers has grown, so has the length of the telecast. CMT will air the commercial-free concert from 8-11 p.m. ET. The benefit for the Salvation Army Disaster Relief Fund originally was slated for two hours. For those interested in attending the event in person, additional $50 tickets have been made available (through Ticketmaster) for the floor and lower bowl of Nashville's Gaylord Entertainment Center. Westwood One will provide the concert's radio feed to stations worldwide. More than 700 radio stations are on board to simulcast the special, including stations in Scotland, Greece and England.