Published July 20. 2021 10:02PM By PETER DOBRIN, The Philadelphia Inquirer PHILADELPHIA — When Denyce Graves visited Marian Anderson in the Connecticut home where the famed singer lived later in life, the two vocalists talked about how Anderson had never sought to “become the face of the civil rights movement.” But Anderson was called to that moment in Washington, Graves said, referring to the now-historic 1939 open-air concert in front of the Lincoln Memorial, when Anderson’s voice became a unifying force for racial justice. “She would open her mouth and sing,” said opera star Graves, “and I don’t care who you were — you knew you were in the presence of something great, something tremendous, something that was bigger than all of us.”