The Sound of Silence is a series of works by “Open 5 baz”, which first created as an installation in the first festival of Fajr Afarinan in Saba Complex-Tehran. In continuance of this series, Open 5 baz used the natural elements such as; the stones and water, to address their political circumstances in Iran. By throwing stones in the water they imply their opposition. This work is addressing all political prisoners who have been arrested because of their attitudes.