1977’s Bell Labs Alles synth demo came pre-Crumar, features Laurie Spiegel cameo

In 1977, the marriage of motion pictures and telephones somehow birthed Hal Alles’ Bell Labs Digital Synthesizer – an experimental additive synth that imagined new directions for both music and vocal communication. This 1977 demo has the creator show off that vision, and Laurie Spiegel is on-hand to explore the device compositionally.