Opera

Opera joins a dramatic text, called a libretto, to music and staged action. Singers perform with instrumental accompaniment, often an orchestra, while scenery, costumes, lighting and movement help shape the production. Much of an opera's text is sung, but the balance varies: some works keep music continuous, while others divide it into set pieces connected by recitative—a speech-like style of singing—or spoken dialogue. Arias can pause the action for reflection or display, while ensembles and choruses let several characters or groups sing together. Opera is therefore not a single fixed format but a family of musical-theatrical practices.

The Western operatic tradition took shape in Florence around the turn of the seventeenth century. Poets and musicians in Florentine circles, influenced by humanist interest in ancient Greek drama, experimented with a dramatic style between speech and song. Jacopo Peri's Dafne, created with librettist Ottavio Rinuccini and performed in 1598, is often treated as the earliest opera, although most of its music is lost. Peri's Euridice, performed in 1600, is the earliest complete opera to survive. Claudio Monteverdi's L'Orfeo, first performed in 1607, expanded the musical resources of the new form and became the earliest opera to remain in the modern repertory.

Early opera was closely associated with courts and elite celebrations. In 1637, Venice's Teatro San Cassiano opened as the first public opera house, helping establish a ticket-buying audience beyond court circles. As opera travelled, composers and performers adapted it to different languages and tastes. Italian styles remained influential, while distinctive traditions developed in France, German-speaking lands, England and elsewhere. Later reformers sought different balances between musical display and dramatic clarity; composers such as Christoph Willibald Gluck, Giuseppe Verdi and Richard Wagner became associated with influential approaches to those questions. Opera's history is consequently a sequence of overlapping traditions rather than a single uninterrupted style.

An opera performance brings together many kinds of work. A librettist shapes the dramatic text; a composer sets it to music; singers, orchestra, chorus and conductor realize the score; and a director and design teams build the staging. Productions may preserve historical conventions or reinterpret a work for a contemporary audience. The same opera can therefore sound and look different across performances, languages and periods. The term also needs cultural context: this article focuses on the Western tradition that emerged in Italy, while other regions have their own opera and musical-theatre traditions that should not be treated as mere variants of the European form.