By Alanna Nash
Updated January 26, 2001 at 05:00 AM EST

Parton’s The Grass Is Blue was ’99’s top bluegrass album, but this all-acoustic follow-up proves a sequel can surpass the original. In wedding bluegrass with the Appalachian sound of her youth, Parton, who wrote half of the material and reprises her classic ”Down From Dover,” repeatedly explores her favorite theme — romantic betrayal — and turns in a powerful performance, augmented by the best of bluegrass’ hot pickers. A