The article about David Benjamin Lewin *58 (Princeton Portrait, June/July issue) was interesting. I thought readers might be interested in another computer-music pioneer, Lejaren Hiller ’45 *47. Hiller earned a Ph.D. in chemistry from Princeton and worked for DuPont before moving to the academic world and working on computerized compositions. One example of his work can be found on YouTube at bit.ly/LejarenHiller [7].