The university hosts a number of honour societies, including the McMaster Honour Society and a chapter of the Golden Key International Honour Society. The university is home to two semi-professional acting companies, McMaster Musical Theatre and the McMaster Thespian Company. The McMaster Engineering Musical is an annual musical production written, directed, and cast by engineers. The production often features unique interpretations of popular songs or musicals. The university and the student unions do not recognize any fraternity or sororities; with existing fraternities and sororities chapters based at McMaster operating as non-accredited off-campus organizations.