The bullroarer, rhombus, or turndun, is an ancient ritual musical instrument and a device historically used for communicating over greatly extended distances. It dates to the Paleolithic period, being found in Ukraine dating from 17,000 BC.

Ukraine happens to be the place where my grandmother was born. No one from my family has ever been there. She never returned. At the time when this performance was made, the political situation in Ukraine made it impossible for me to go there. Two years later, during the making of Pervomaisk, I finally had the chance to explore that place.