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Muldoon - Downstage Theatre, Auckland 25 June – 17 July 2004 - A play about the former New Zealand Prime Minister Robert Muldoon
Sanderson was one of the founders of Downstage Theatre in 1964 in Wellington, with a vision of a small professional company performing challenging works in an intimate venue.
He has collaborated with other artists across Canada including Karen Hines, Daniel MacIvor and da da Kamera, One Yellow Rabbit, Rumble Productions, Theatre Replacement, Instant Coffee, Alberta Theatre Projects, Theatre Passe Muraille, Go Chicken Go, Factory Theatre, the Theatre Centre and Downstage Theatre.