Price ceiling is an economic term that describes the situation in which the government imposes a legal maximum on the price of a good. If the price ceiling is below the equilibrium price, the price ceiling causes a shortage in the market. So, if the equilibrium price is $40 or below, a price ceiling of $40 has no effect on the number of people attending musical concerts. But, if the equilibrium price in the absence of price controls is above $40 per ticket, then imposing a price ceiling of $40 will cause quantity demanded to exceed quantity supplied. This will result in a shortage of tickets and a decrease in the number of people who attend classical music concerts.