Guitars, Cadillacs, Etc., Etc.: The Country Music Hall of Fame and Museum's next major exhibition, Western Edge: The Roots and Reverberations of Los Angeles Country-Rock, opens Sept. 30 for an almost three-year run. Highlighted artists include the Byrds, Buffalo Springfield, Eagles, Emmylou Harris, Nitty Gritty Dirt Band, Linda Ronstadt and Dwight Yoakam. The exhibit's opening weekend will include two concerts in the CMA Theater: Western Edge: Los Angeles Country-Rock in Concert (Sept. 30) and Desert Rose Band (Oct. 2). Tickets go on sale tomorrow (6/24) here.