There's been a slow but steady transition in the works for acoustic group Mountain Heart, which is moving away from its traditional bluegrass roots . . . now living in Nashville. "We're comfortable with what we are and what we aren't, and we're pleased to be accessible to so many more people now.

During the past decade, we have come to know Mountain Heart as an industrious bluegrass brigade full of familiar faces (including longtime Renfro . . . Adam Steffey, both of whom have left the band), a feverish sense of traditionalism and a willingness to veer into uncharted musical territory.