Just as song crossover..the Rollings Stones little tune 'The Girl with Faraway Eyes'. It has hillbilly overtones and pedal steel in it. Eagles crops the country boundary in several of there hits. In fact their rock music from the seventies is today's country. Remember the song' Don't Bogart that Joint"? It reminded me of Buck Owens. I don't recollect who sang it. Our old friend and rocker Tom Petty had country in his blood. He did the old Hank Williams song"Lost Highway".
Of course the song which was brought up on another thread"Down to Seeds and Stems". Another rocker country tune. When you think about fast picking which jams down more metal rock or blue grass?
C.Dan