An oratorio is a large musical composition for orchestra, choir, and soloists. It typically tells a religious story or conveys a moral message, often performed in concert settings rather than in a theatrical context. Unlike operas, oratorios do not include acting, scenery, or costumes, focusing instead on the music and the narrative. The structure of an oratorio usually includes several sections, such as arias, recitatives, and choruses. Famous examples include Handel's Messiah and Haydn's The Creation. These works are often performed during religious holidays or special events, showcasing the power of music to convey deep emotions and spiritual themes.