In this April 9, 2012 photo, David Russell, distinguished professor of violin at the University of North Carolina, Charlotte, examines one of the violins on display at the Violins of Hope exhibit at the university in Charlotte, N.C. Eighteen violins recovered from the Holocaust and restored by Israeli violin maker Amnon Weinsten make their U.S. debut on Sunday, April 15. Some were played by Jewish prisoners in Nazi concentration camps, while others belonged to the Jewish Klezmer musical culture. (AP Photo/Chuck Burton)