Reznor made 'Hurt' a sad song, Mr. Cash was able to bring it to downright painfull. (complimentary)
He's been doing a cover like that per album for some time.
BTW, Mr Cash doesnt sing country music, he sings Johnny Cash music.
Sadly he is very ill and his wife just passed away, when this man passes you will hear a lot of his music and be blown away. He has albums and albums worth of great stuff that is rarely played on any radio station.
If you get a chance check out his version of Depech Mode's 'Personal Jesus' again in this song he blows away the original.