"A musical composition for voices and orchestra, telling a sacred story without costumes, scenery, or dramatic action. [Italian, after Oratorio, the Oratory of Saint Philip Neri at Rome, where...
An oratorio is a large musical composition.
Its Like a little decoration, or big decoration, in the center of a table or area
Operas based on religious subjects. For example: 'Messiah' by Handel
Sacred music