Laurie Spiegel’s Concerto for Self-Accompanying Digital Synthesizer.
The instrument is possibly the first realtime digital synthesizer, built at Bell Telephone Labs, NJ by Hal Alles and team, with C language software written by Laurie that processes the player’s live input into an ongoing accompaniment that will continue to be played live against.
via MusicMouse
Great Vid. Makes me miss the good 'ol days of electronic music in some ways. I chatted with Laurie a number of years ago about generative music apps (I was a MusicMouse aficionado on my 512e) so it's great to see this, as I hadn't seen it before.