Ópera is a theatrical art form that combines singing, orchestral music, acting, and sometimes dance to tell a story. It originated in Italy in the late 16th century and has since evolved into various styles and traditions around the world. The performances typically feature a libretto, which is the text of the opera, and are often staged in elaborate settings. The music in an opera is usually composed for a full orchestra, and the singers perform in a range of vocal styles, including soprano, mezzo-soprano, tenor, and bass. Famous operas include works by composers like Wolfgang Amadeus Mozart, Giuseppe Verdi, and Giacomo Puccini. Operas are often performed in opera houses, which are specially designed venues for this art form.