Wikipedia: hanna Horwitz (nee Channa Helene Shapiro, May 21, 1932 -- April 29, 2013) was a contemporary artist based in Los Angeles, United States.[1] She is recognized for the logically-derived compositions created over her five decade career. Her visually complex, systematic works are generally structured around linear progressions using the number eight.n 1968, Horwitz (then Channa Davis) submitted a proposal to the seminal Art and Technology Program at the Los Angeles County Museum of Art. The proposed sculpture consisted of eight beams moving vertically out of sculptural bases over ten minutes of time, corresponding to a choreography of colored lights. Although the sculpture was never fabricated, Horwitz's proposal was included in the 1970 program catalogue, whose cover prominently displayed the faces of the white male artists whose works appeared in the culminating exhibition at the Museum. Art and Technology's glaring omission of women"”specifically the fact that Horwitz was never asked to speak with industry about the possibility of making her sculpture"”led to a public outcry in the feminist art community in Los Angeles, involving confrontations and eventual concessions from the curator Maurice Tuchman.[5][6]Not long after submitting the Art and Technology proposal, Horwitz continued her interest in representing motion across time. She asked her then-husband for a break from a tennis match to spend two hours drawing, and during this period invented a system of composition called Sonakinatography, meaning sound - motion - notation.[4] Sonakinatography plots the activity of eight entities over a period of time using numbers, colors, and the eight-to-the-inch squares of the graph paper they appear on. While visually appealing in their own right as standalone drawings, Sonakinatography compositions have also been performed via percussion, dance, spoken word, and electronic instruments.. She received the honor of a Guggenheim Fellowship shortly before her death in April, 2013. -- Source of annotation: Marvin or Ruth Sackner.