Laurie Spiegel UP254

Laurie Spiegel (born September 20, 1945) is an American composer. 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.

"Music Mouse - An Intelligent Instrument" (1986) is an algorithmic musical composition software for Macintosh, Amiga, and Atari computers. The "intelligent instrument" name refers to the program's built-in knowledge of chord and scale convention and stylistic constraints. Automating these processes allows the user to focus on other aspects of the music in real-time. In addition to improvisations using this software, Spiegel composed several works for "Music Mouse", including Cavis Muris in 1986, Three Sonic Spaces in 1989, and Sound Zones in 1990. She continued to update the program through Macintosh OS 9 and, as of 2021, it remained available for purchase or demo download from her website.


Spiegel was seen by some as a pioneer of the New York new-music scene. She withdrew from this scene in the early 1980s, believing that its focus had shifted from artistic process to product. While she continues to support herself through software development, Spiegel aims to use technology in music as a means of furthering her art rather than as an end in itself. In her words, "I automate whatever can be automated to be freer to focus on those aspects of music that can't be automated. The challenge is to figure out which is which."

Spiegel's realization of Johannes Kepler's "Harmonices Mundi" was chosen for the opening track on the "Sounds of Earth" section of the golden record placed on board the Voyager spacecraft in 1977. Another work, titled "Sediment", was included in the 2012 film The Hunger Games.