Spawned in the first generation of computer music hackers in San Francisco’s Silicon Valey, Joel Ryan (*1945) is a composer who has long championed the idea of performance-based electronic music. Drawing on his scientific background, he pioneered the application of digital signal processing to acoustic instruments. Since 1984, he has collaborated extensively at STEIM in Amsterdam with artists and musicians including Evan Parker, William Forsythe, George Lewis, Steina Vasulka and Jerry Hunt. He has taught philosophy, physics and mathematics. He is a researcher at STEIM in Amsterdam and tours with the Frankfurt Ballet. He has performed literally all over the world.