At 7.30 pm in Canaguinim village, about 30 km from Goa's big Margao city, the roads are dark, the streets dead and the only activity is at the local church which prepares for its weekly Tiatr show. The villagers start trooping in by 8 and the show begins on a makeshift stage, under a colourful tarpaulin. Tiatr is a form of musical theatre, many times political satire and akin to the nukkad natak in North India.