Lou Silver Harrison (May 14, 1917 – February 2, 2003) was an American composer. He was a student of Henry Cowell, Arnold Schönberg, and K.P.H. Notoprojo (also known as K.R.T. Wasitodiningrat or Pak Cokro). Harrison is particularly noted for incorporating elements of the music of non-Western cultures into his work, with a number of pieces featuring traditional Indonesian gamelan instruments, and several more featuring versions of them made out of tin cans and other materials.