Krzysztof Penderecki is one of the world’s great contemporary composers and a Polish classical music icon. His 80th birthday in November 2013 occasioned an extraordinary gathering of the world's most significant musicians and his most important interpreters. Companions and long-time friends of the composer presented their homage to Penderecki with some of his most famous works being performed: Threnody to the Victims of Hiroshima, the Duo Concertante, the Concerto Grosso No. 1 and the unique Credo.