Regarding Sturgill Simpson...if that's considered 'Rock Music', you can count me out.
Not saying he's bad (well maybe I am), but he sounds more of the new wave shit kicking Country Rock that's infiltrated all of classic country music these days.
His lyrics might be more substantial, and his band cranks it up, but he began his career strictly playing Kentucky bluegrass and his roots are country.
I love bluegrass, and I love country, and I love rock, but when you mix them all together you usually end up with a diluted hodgepodge of aimless confusion.
_____________________________________________________________Rip this joint, gonna save your soul, round and round and round we go......