After 'Texas Sun,' Leon Bridges and Khruangbin seek solace on 'Texas Moon'

'An endless stretch of Texas highway on a hot day; moonlit car rides with a secret lover. These are some of the images invoked on Texas Sun, the first collaborative EP between soul and R&B musician Leon Bridges and psychedelic trio Khruangbin. They debut their second homage to the state both musical acts call home — this time a more introspective, spiritually-driven journey through the darker underworld of the "Lone Star" state. Bridges and Mark Speer, guitarist for Khruangbin, spoke to NPR's Kelsey Snell about the upcoming release of Texas Moon.'