EToOto (painting with sound) is a project by Yasushi Matsui to explore a new form of unity through painting with sound. Since 2013, he produced videos, such as “onnon” (2014) and “OnNoN in Spectrum scale” (2016), performed along Dakim and Tamura Fumitake (Bun) Japan tour in 2014, and showcased at the experimental beat event, Smart Bomb in Oakland, California in 2016. He also published DIY programs and tutorial videos on the internet for people to experiment his ideas.