There aren’t many composers or musicians who can say that they changed society. And by that I mean really changed it. Few have ever come close to materially or politically transforming their surroundings in any truly meaningful way. There are many who claim they have, or wish they had: Wagner or Beethoven in the 19th century, Barenboim most notably – but doubtfully – in our own. But there is only one musician who actually did: the conductor, Kurt Masur.