Oratorio
An oratorio is a large composition for orchestra, vocal soloists and chorus. It differs from an opera in that it doesn't have scenery, costumes or acting.Most oratorios have biblical themes, but a number of composers, notably George Frideric Handel, wrote secular oratorios based on themes from Greek and Roman mythology. Whether religious or secular, the theme of an oratorio is meant to be weighty, and can include such topics as the creation of the world, the life of Jesus, or the career of a classical hero or biblical prophet.
The plot of an oratorio is often minimal, and some oratorios are not narrative at all. While many operas are based on a dramatic narrative, in oratorios the esthetic purpose of the narrative is more often to provide organization and significance to a large musical work.
Oratorios usually contain:
- An overture
- Various arias, sung by the vocal soloists
- Ensemble singing
- Recitative, usually employed to advance the plot
- Choruses, often monumental and meant to convey a sense of glory. Frequently the instruments for oratorio choruses include timpani and trumpets.