By Mikael Wood
Updated June 09, 2010 at 04:00 AM EDT

Dierks Bentley epitomizes the New Nashville ideal, but on Up on the Ridge he goes old-school with a set of acoustic bluegrass jams. Kris Kristofferson and Jamey Johnson show up in cred-bestowing cameos, as does bluegrass giant Del McCoury, who lends vocals to a spine-tingling rendition of U2’s ”Pride (In the Name of Love).” B+

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