John Mellencamp is getting less rocking and more rootsy with age. Source: Supplied THIS week’s album reviews from The Courier-Mail (ratings out of five stars). ROOTS JOHN MELLENCAMP Plain Spoken (Republic/Universal) **** IF BRUCE Springsteen is the poet of working-class America, John Mellencamp is the voice of the nation’s heartland. He might be firmly rooted in Bloomington, Indiana, but he bucks the Midwestern stereotype with his liberal worldview and portrayal of religion as a source of salvation rather than division. [...]