One of bluegrass music’s strongest and most engaging performing groups, Nashville’s The Grascals have consistently freshened traditional sounds with modern, progressive elements. Their Rounder albums were impressive with each an excellent introduction to the group. More recently, the band has occasionally faltered by producing music lacking distinction. Albums have been uneven in both song selection and execution. The Grascals have attempted to broaden their appeal in ways detrimental to their brand, “American Pickers” from 2013 being just one example.