BRATTLEBORO— The Brattleboro Museum & Art Center and Epsilon Spires present “The Shapes We Leave Behind,” a live performance and video installation made by musician and multimedia artist Anna Oxygen (aka Anna Huff), in collaboration with artist Fawn Krieger, who creates sculptures, props, and costumes. Working under the nickname Volumes, the two artists incorporate both digitized and tactile sculptural objects as well as sound and multimedia performance to explore how live bodies and voice engage with physical forms, from screens to stage and back again.