Observations about the vital role that music played at the March on Washington for Jobs and Freedom in 1963, in the civil rights movement and even on social and political life in the U.S. could fill books, far more than there was room to address in Wednesday’s Page A-1 story on protest music. Here are a few additional thoughts that, though not included in that report, are eminently worth sharing. Noel Paul Stookey reunited Wednesday morning with his former Peter, Paul and Mary group mate Peter Yarrow in Washington to reprise their appearance at the march 50 years ago. “If...