Structure
Opera seria built upon the conventions of the High Baroque era by developing and exploiting the da capo aria, with its A-B-A form. The first section presented a theme, the second a complementary one, and the third a repeat of the first with ornamentation and elaboration of the music by the singer. As the genre developed and arias grew longer, a typical opera seria would contain not more than thirty musical movements.
A typical opera would start with an instrumental overture of three movements (fast-slow-fast) and then a series of recitatives containing dialogue interspersed with arias expressing the emotions of the character, this pattern only broken by the occasional duet for the leading amatory couple. The recitative was typically secco: that is, accompanied only by continuo (harpsichord or cello). At moments of especially violent passion secco was replaced by stromentato recitative, where the singer was accompanied by the entire body of strings. After an aria was sung, accompanied by strings and oboe (and sometimes with horns or flutes), the character usually exited the stage, encouraging the audience to applaud. This continued for three acts before concluding with an upbeat chorus, to celebrate the jubilant climax. The leading singers each expected their fair share of arias of varied mood, be they sad, angry, heroic or meditative.
The dramaturgy of opera seria largely developed as a response to French criticism of what were often viewed as impure and corrupting librettos. As response, the Rome-based Academy of Arcadia sought to return Italian opera to what they viewed as neoclassical principles, obeying the dramatic Unities of Aristotle and replacing "immoral" plots, such as Busenello's for L'Incoronazione di Poppea, with highly moral narratives that aimed to instruct, as well as entertain. However, the often tragic endings of classical drama were rejected out of a sense of decorum: early writers of opera seria librettos such as Apostolo Zeno felt that virtue should be rewarded and shown triumphant. The spectacle and ballet so common in French opera were banished.
Read more about this topic: Opera Seria
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