Fred Collopy designed the first version of Imager – software for playing abstract visuals – for the Apple II computer in 1977. His work has been presented at ISEA, SIGGRAPH, Sonic Light, and the IEEE Symposium on Visual Languages and been published in Leonardo and elsewhere. He has performed visuals live with the jazz ensemble Kassaba, electronic musicians Dino Felipe and Henry Warwick, and others. He has been a visiting scientist at IBM’s Watson Research Lab and is on the faculty at Case Western Reserve University. An expanded version of this essay is located at his site, RhythmicLight.com.