Oratorio

An oratorio is a musical composition with dramatic or narrative text for choir, soloists and orchestra or other ensemble.

Similar to opera, an oratorio includes the use of a choir, soloists, an instrumental ensemble, various distinguishable characters (e.g. soloists), and arias. However, opera is musical theatre, and typically involves significant theatrical spectacle, including sets, props, and costuming, as well as staged interactions between characters. In an oratorio, there is generally minimal staging, with the chorus often assuming a more central dramatic role, and the work is typically presented as a concert piece – though oratorios are sometimes staged as operas, and operas are not infrequently presented in concert form.