On September 2nd, 2015, I had the great privilege of conducting an oral history interview with John Chowning, Professor Emeritus at Stanford’s Center for Computer Research in Music and Acoustics (CCRMA). Chowning, a pioneer in the world of computer music, is perhaps best known as the inventor of Frequency Modulation (FM) synthesis. His discovery was eventually licensed to Yamaha who integrated it into a number of instruments, most importantly, the DX7, the world’s first mass-produced digital synthesizer, released in 1983. The DX7 is generally regarded as one of the most important musical instrument inventions of the past 50 years, and was widely adopted by artists across multiple genres in the 1980s. My interview with Chowning is now available via the Stanford Digital Repository (SDR). Chowning and I principally sat down to discuss Leon Theremin’s visit to Stanford in 1991, which Chowning organized and oversaw. Stanford University Libraries recently digitize video footage of this visit which included a day long symposium at CCRMA and an evening concert in Frost Amphiteatre at which Theremin, Max Mathews, and many other notable figures from the world of electronic and computer music at the time performed. However, Professor Chowning and I also discussed additional topics including Chowning's background in computer music, his history at Stanford and the inception of CCRMA, and his close personal and professional relationship with Max Mathews.