Krzysztof Penderecki, one of the world's leading composers, died Sunday at the age of 86. The Polish-born composer established himself while still in his 20s with jarring atonal works such as 'Threnody to the Victims of Hiroshima', and came to be widely admired by music fans and musicians far outside traditional classical music circles. He was an influence on musicians such as Aphex Twin, Radiohead's Johnny Greenwood, Portishead's Beth Gibbons, as well as cineasts such as Stanley Kubrick and David Lynch.