Conducting a concert with instruments played at Nazi concentration camps is personal for Fresno State music professor Thomas Loewenheim. The touring Violins of Hope arrives in Fresno on Saturday. The violins, violas and cellos once belonged to European Jews of the Holocaust. Loewenheim said 90 percent of his family perished in the Holocaust. “Music has the ability to just bring people together like nothing else because it’s a nonverbal medium of communication. And this one has a very strong message, a message of remembering and reminding ourselves of what is important in life and what can happen if we are...