When Was The Oratorio Invented?

When Was The Oratorio Invented? Often cited as the first oratorio is the February 1600 presentation at the Oratoria della Vallicella in Rome, called the “Representation of Soul and Body” (La rappresentazione di anima e di corpo) and written by the Italian composer Emilio de Cavalieri (1550–1602). When was oratorio created? The earliest surviving oratorio