She has worked at Bell Laboratories, in computer graphics, and is known primarily for her electronic-music compositions and her algorithmic composition software Music Mouse... Best known for her use of interactive and algorithmic logic as part of the compositional process, Spiegel worked with Buchla and Electronic Music Laboratories synthesizers and subsequently many early, often experimental and prototype-level music and image generation systems, including GROOVE system (1973–1978), Alles Machine (1977) and Max Mathews's RTSked and John R. Pierce tunings (1984, later known as the Bohlen–Pierce scale) at Bell Labs, the alphaSyntauri for the Apple II (1978–1981) and the McLeyvier (1981–1985). Spiegel's best known and most widely used software was Music Mouse—an Intelligent Instrument (1986) for Macintosh, Amiga, and Atari computers. Continue reading...