Generative Art Timeline · Chapter 6: Personal Computer Era (1980s)
1980
Spiral 5 PTL by Dan Sandin, Tom DeFanti and Mimi Shevitz

This early computer graphics art video by Dan Sandin, Tom DeFanti and Mimi Shevitz uses the image processor as a musical instrument, generating variations on a spiral motif synchronized with an eclectic audio track. Created in 1980 and 1981 by combining Tom DeFanti’s GRASS system and the Sandin Image Processor, this innovative piece was among the first video art works included in the Museum of Modern Art’s collection. The work thus stands as an important achievement in not only early computer animation but in digital art and more broadly the intersection of technology and visual art.
Text by Peter Bauman. Generative Art Timeline, Le Random, fact-checked September 2026.
Sources
People
Dan Sandin, Mimi Shevitz, Tom DeFanti
Movements
computer animation, digital art, Video Synthesis
Filed under
- Ideas
- digital art, Technology and Art, video art
- Technologies
- computer animation, computer graphics, GRASS (Graphics Symbiosis System), Sandin Image Processor
- People
- Dan Sandin, Mimi Shevitz, Tom DeFanti
- Works
- Spiral 5 PTL, Visual Music Orchestration
- Organisations
- MoMA
Related moments
- 1971 · Dan Sandin Creates the Sandin Image Processor
- 1973 · Thomas DeFanti Develops Animation Language GRASS (Graphics Symbiosis System)
Echoes across time
- 1968 · Lee Harrison III Builds Scanimate
- 1968 · Notable computer artworks
- 1968 · The machine, as seen at the end of the mechanical age at MoMA
Le Random editorials
- Copper Giloth on Video Games to Video Art, Peter Bauman, September 22, 2025
- Barbara London on New Territory, Peter Bauman, February 11, 2025
- Jane Veeder on Loving Change, Copper Giloth & Peter Bauman, April 27, 2026
- Demystifying Generative Systems, Peter Bauman, June 20, 2024
Le Random podcast
- Timeline Ch 6—Personal Computer Era (1980s) with Mark Wilson, Copper Giloth, Dan Sandin, David Em, William Latham, Stephen Todd, Darcy Gerbarg & Geoff Davis — listen with transcript on Le Random (08 Feb 2024, 85 min). Featuring Dan Sandin. Chapter 6’s episode. Apple Podcasts · Spotify
- Timeline Ch 5—Artist-Programmer Era (1970s) with Joan Truckenbrod, Hans Dehlinger & Anika Meier — listen with transcript on Le Random (14 Jan 2024, 65 min). Transcript mentions Dan Sandin. Apple Podcasts · Spotify
- One Year of Le Random — listen with transcript on Le Random (22 Mar 2024, 59 min). Transcript mentions Dan Sandin. Apple Podcasts · Spotify