UNDO is a Canadian duo featuring Christof Migone (Toronto) and Alexandre St-Onge (Montréal). Their partnership began as a sound art collaboration in 1997. Since its inception and in its various appearances—in Montréal, New York City, London (Ontario) and Québec City—UNDO has explored the barely perceptible. The duo combines its reduction of aural space produced by reduced actions with a complementary reductive lighting. In 2000, undo released a CD on its own label, squint fucker press, and will soon release a remix of Vito Acconci’s Waterways: Four Saliva Studies (along with the audio from the original video).