Chris Willman Music WriterPioneering Black country superstar Charley Pride will be the subject of a 90-minute CMT special set for August, the network is announcing today, with stars like Luke Combs, Garth Brooks, Mickey Guyton and Darius Rucker participating in the commemoration.Titled “CMT Giants: Charley Pride,” the special will be arriving when Pride-pride is still at a peak level, with his name constantly brought up in the current conversations about race and country music, and how his ascent to the top of the genre in the 1970s represented both an enormous breakthrough as well as an opportunity to keep the door open that was lost.The special will premiere August 25 at 9 p.m.