The lineup for the mammoth Country Freedom Concert on Oct. 21 continues to grow. Clint Black and Tim McGraw have been added to a bill that includes George Strait, Alan Jackson, George Jones, Martina McBride, Brooks & Dunn, Vince Gill, Lee Ann Womack, Sara Evans and Lonestar. Additional artists will be announced soon. The benefit concert will be telecast live, commercial-free on CMT from 8-11 p.m. ET. Tickets go on sale at 11 a.m. ET Friday (Oct. 12) through Ticketmaster. Tickets will be priced at $25, $50, $100, $150 and $1000, and proceeeds will benefit the Salvation Army's Disaster Relief Fund.