Sixteen years ago the Philadelphia Orchestra embarked on a diversity campaign. “But in 2007 the orchestra is no closer to representing the city’s diversity. Peer out into Verizon Hall, where the audience is a sea of white faces. (Only 1 percent of subscribers were African American as of the last count, in 2001, the orchestra says.) Look onstage. Three players are African American – the same three whose arrival in the early 1970s elicited headlines that barriers in the orchestra world were crumbling. Go behind the scenes. The orchestra’s board has less African American representation than it did in 1991.”