Morton Subotnick is one of the pioneers in the development of electronic music and multi-media performance and an innovator in works involving instruments and other media, including interactive computer music systems. Most of his music calls for a computer part, or live electronic processing; his oeuvre utilizes many of the important technological breakthroughs in the history of the genre. His work Silver Apples of the Moon has become a modern classic and was recently entered into the National Registry of Recorded works at the Library of Congress. In the early 60s, Subotnick taught at Mills College and with Ramon Sender, and co-founded the San Francisco Tape Music Center. It was also during this period that Subotnick worked with Don Buchla on what may have been the first analog synthesizer.