oratorio
/ˌɔrəˈtɔrioʊ/
noun
- A large musical composition for orchestra, choir, and soloists, usually on a religious or biblical theme, performed without staging or costumes.
- She bought tickets to hear an oratorio about the life of Moses.
- Unlike an opera, an oratorio is not acted out on stage.
- The choir performed Handel's 'Messiah,' a famous oratorio, at the cathedral.