FreshGrass, a family-friendly bluegrass and roots music festival in the Berkshires of northwestern Massachusetts, is slated for Sept. 19-21, 2014. For three days and nights, the indoor galleries and outdoor courtyards and meadows of the Mass MoCA campus in North Adams will be filled with the sounds of banjos, fiddles, guitars, mandolins and voices of traditionalists and trailblazers alike. [To continue reading this article, click on the headline.]