Rounding off his 2011 World Tour , which included United States , England , the Netherlands , Switzerland and Germany , Simon appeared at Ramat Gan Stadium in Israel in July 2011 , making his first concert appearance in Israel since 1983 . On September 11 , 2011 , Paul Simon performed " The Sound of Silence " at the National September 11 Memorial & Museum , site of the World Trade Center , on the 10th anniversary of the September 11 attacks
September 11 attacks
September 11 attacks
Paul Simon