American composer born on May 10, 1916, in Philadelphia. Works for multiple combinations of instruments and voices. Also one of the foremost contributors to the Columbia-Princeton Electronic Music Centre – the principal centre for tape and electronic music in the United States. Main electronic works: Vision and Prayer, Philomel (for voice and tape), Sounds and Words, Phonemena (for soprano and piano or tape), Composition for Synthesizer, Ensembles for Synthesizer.