The classic Callas role is Tosca, a five-letter opera by Giacomo Puccini. It is a melodramatic work set in Rome in 1800 and tells the story of the love triangle between the painter Mario Cavaradossi, the singer Floria Tosca, and the police chief Baron Scarpia. The role of Tosca has been performed by many famous singers, but Maria Callas is widely considered to be the definitive interpreter of the role.