 His work as an animator first won note during 1945, setting the songs "My Darling Clementine" and "The Daring Young Man on the Flying Trapeze" to animated cut-outs.In 1952, he furthered his reputation by co-starring with in Norman McLaren's "Neighbours", a film which used the technique known as "pixilation" (a term coined by Munro) and which won both a Canadian Film Award and an Academy Award.He went on to collaborate with McLaren on the films "Two Bagatelles" (1953), "Seven Surprizes" (1963), "Christmas Cracker" (1963) and "Canon" (1964).