There are actually Plainly Appears He's drawn to regularly: glimmering reverberant timbres, uncannily sustained chords and clusters, melodic phrases that shy away from turning into melodies. But his catalog holds ample exceptions to any generalization about his music. The impression of computers continued in 1956. Lejaren Hiller and Leonard Isaacson https://www.youtube.com/watch?v=JAf6bAiJCs0