The Amazon series “The Gray House” is now available to stream, and with it the country-heavy soundtrack. Featuring The War and Treaty, Shania Twain, Willie Nelson (whose “Heart of America” was released a few weeks back) and Lainey Wilson, the eight-episode Civil War drama tells the true story of a female spy ring in Richmond, Virginia, that helped the Union win the war. Lainey officially dropped a video for “Dead End Red Dirt Road,” her contribution to the soundtrack.