In «Es Ring Wolf Stein», Aio Frei weaves a site-specific research project into a collaborative four-channel sound installation for the Haus für Kunst Uri. The point of departure is a magical worldview formative for the region of Uri, which functions as a poetic notation figure (Es / Ring / Frevel). The work engages with the witch persecutions in the canton of Uri, connects to pre-christian ritual forms of knowledge as well as queer, healing, and communal practices, and operates with an understanding of non-linear temporality. Mystical stones and non-human entities are incorporated into the composition as key agents.