Pas de deux (released as Duo in the United States) is a 1968 short dance film by Norman McLaren, produced by the National Film Board of Canada. The film was photographed on high contrast stock, with optical, printing, for a sensuous and almost stroboscopic appearance. It shows a ballerina (Margaret Mercier) dancing by herself (or rather, with images of herself), before being joined by a male dancer (Vincent Warren), to perform the pas de deux of the title, as choreographed by Ludmilla Chiriaeff. The film is choreographed to Romanian pan pipe music.