Horwitz spent her career creating rigorous, but beautiful, conceptual works on paper. In her Sonakinatography drawings, she developed the idea of expressing sound (sona) and motion (kina) through two-dimensional notation and color. She once said, "As a painter, I could compose in two dimensions, as a sculptress I could compose in three dimensions, but I could not understand how musicians and dancers could compose in the fourth dimension: Time." While she considered her drawings to be her main form of expression, she also conceived them as scores that were open to interpretation by other artists. She submitted this two-part work, which presents its score both numerically and through color, as a proposal to the Laguna Beach Art Museum for a quarter-mile, eight-day installation.
Each sheet signed and dated lower right, "Channa Horwitz 1972". On 2019.100a: Written at top: "5 feet per beat for 1/4 miles - 248 beats 8 per day fade out / Every day one day fades out for 31 days. On the 31st day only the numbers + grid remain. All color is gone. / Channa Davis, 1971. Proposal to Long Beach Museum". On 2029.100b: Written at top: "5 feet per beat for 1/4 miles - 248 beats 8 per day fade out / Every day 8 beats of color disappear. On the 31st day all color is gone leaving the grid pattern + numbers. Light sensitive materials to be used. / Copyright 1971 by Channa Davis. Proposal to Long Beach Museum"