Pert Near Sandstone: The Hardest Part of Leaving Minnesota roots rockers have been a productive bunch as of late, and now, bluegrass big shots Pert Near Sandstone are upon their release of their sixth studio album, The Hardest Part of Leaving, a richly developed follow-up to 2011’s well-received Paradise Hop. For the album, the band have added cajun fiddle, swing piano, and…