“You always know what to expect from a name brand like Sweet Honey in the Rock. Despite the comings and goings of 23 singers in its lifetime, Sweet Honey’s rich harmonies and socially conscious lyrics make it as recognizable as a drumbeat, as uplifting as a revival meeting. But what will happen when 61-year-old Bernice Johnson Reagon, the group’s founder, retires in late January, Sweet Honey’s 30th anniversary?”