Beyond the 4 Walls. Campbell BrothersAuthor: Campbell Brothers Release Date: 09 07 2013 Details: Beyond The 4 Walls marks the triumphant return of the Campbell Brothers to studio recording after a hiatus of far too many years. Since they were first heard outside their church almost fifteen years ago, the group has been on an incredible and often arduous journey, balancing their faith with their desire to take their music to new audiences. The brothers alternatively pluck heartstrings and