Go Guest High On That Mountain: Brad Paisley, Carrie Underwood, Chris Stapleton, Cody Johnson, Emmylou Harris, Keith Urban, Luke Combs, Maren Morris, Reba McEntire, Ricky Skaggs, Rodney Crowell and Sting are among the artists set to appear on CMT Giants: Vince Gill Sept. 16 at 8pm CT. The 90-min special will also feature an interview with Gill as he reflects on his career, songwriting, musical influences and future plans alongside rare photos, performance footage and interviews from the vault.