(NORTH ADAMS, Mass.) – Country singer-songwriter Jason Isbell, former member of Southern-rock sensations Drive-By Truckers, performs at MASS MoCA on Friday, August 15, 2014, at 8pm. Isbell is riding high on critical acclaim for last year’s solo album, “Southeastern,” which has been described as his “Blood on the Tracks” or “Tunnel of Love” in its…