Opera in German
The world's first opera was "Dafne" by Jacopo Peri, which appeared in Florence in 1598. Three decades later Heinrich Schütz set the same libretto in a translation by the poet Martin Opitz, thus creating the first ever German-language opera. The music to Schütz's "Dafne" is now lost and details of the performance are sketchy, but it is known to have been written to celebrate the marriage of Landgrave Georg II of Hessen-Darmstadt to Princess Sophia Eleonora of Saxony in Torgau in 1627. As in Italy, the first patrons of opera in Germany and Austria were royalty and the nobility, and they tended to favour composers and singers from south of the Alps. Antonio Cesti was particularly successful, providing the huge operatic extravaganza "Il pomo d'oro" for the imperial court in Vienna in 1668. Opera in Italian would continue to exercise a considerable sway over German-speaking lands throughout the Baroque and Classical periods. Nevertheless, native forms were developing too. In Nuremberg in 1644, Sigmund Staden produced the "spiritual pastorale", "Seelewig", which foreshadows the "Singspiel", a genre of German-language opera in which arias alternate with spoken dialogue. "Seelewig" was a moral allegory inspired by the example of contemporary school dramas and is the first German opera whose music has survived.
Opera
Opera did not remain confined to court audiences for long. In 1637, the idea of a "season" (Carnival) of publicly attended operas supported by ticket sales emerged in Venice. Monteverdi had moved to the city from Mantua and composed his last operas, "Il ritorno d'Ulisse in patria" and "L'incoronazione di Poppea", for the Venetian theatre in the 1640s. His most important follower Francesco Cavalli helped spread opera throughout Italy. In these early Baroque operas, broad comedy was blended with tragic elements in a mix that jarred some educated sensibilities, sparking the first of opera's many reform movements, sponsored by the Arcadian Academy, which came to be associated with the poet Metastasio, whose libretti helped crystallize the genre of opera seria, which became the leading form of Italian opera until the end of the 18th century. Once the Metastasian ideal had been firmly established, comedy in Baroque-era opera was reserved for what came to be called opera buffa.
Before such elements were forced out of opera seria, many libretti had featured a separately unfolding comic plot as sort of an "opera-within-an-opera." One reason for this was an attempt to attract members of the growing merchant class, newly wealthy, but still not as cultured as the nobility, to the public opera houses. These separate plots were almost immediately resurrected in a separately developing tradition that partly derived from the commedia dell'arte, a long-flourishing improvisatory stage tradition of Italy. Just as intermedi had once been performed in between the acts of stage plays, operas in the new comic genre of "intermezzi", which developed largely in Naples in the 1710s and '20s, were initially staged during the intermissions of opera seria. They became so popular, however, that they were soon being offered as separate productions.