in Naples. He applied himself to the composition of cantatas and oratorios; at that time there was little difference (apart from increasing length) between cantata, oratorio and opera, all based on the alternation of secco recitative and aria da capo. Works from this period include Dixit Dominus and the dramatic cantata Aci, Galatea e Polifemo, written in Naples. While in Rome, probably through Alessandro Scarlatti, Handel had become acquainted with Cardinal Grimani, a distinguished diplomat who wrote libretti in his spare time, and acted as an unofficial theatrical agent for the Italian royal courts. He was evidently impressed by Handel and asked him to set his new libretto, Agrippina. Grimani intended to present this opera at his family-owned theatre in Venice, the Teatro San Giovanni Grisostomo, as part of the 1709–10 Carnevale season. Writing history Libretto Grimani's libretto is based on much the same story used as the subject of Monteverdi's 1642 opera L'incoronazione di Poppea. Grimani's libretto centres on Agrippina, a character who does not appear in Monteverdi's darker version. Grimani avoids the "moralizing" tone of the later opera seria libretti written by such acknowledged masters as Metastasio and Zeno. According to the critic Donald Jay Grout, "irony, deception and intrigue pervade the humorous escapades of its well-defined characters". All the main characters, with the sole exception of Claudius's servant Lesbus, are historical, and the broad outline of the libretto draws heavily upon Tacitus's Annals and Suetonius' Life of Claudius. It has been suggested that the comical, amatory character of the Emperor Claudius is a caricature of Pope Clement XI, to whom Grimani was politically opposed. Certain aspects of this conflict are also reflected in the plot: the rivalry between Nero and Otho mirror aspects of the debate over the War of the Spanish Succession, in which Grimani supported the Habsburgs and Pope Clement XI France and Spain. Composition According to John Mainwaring, Handel's first biographer, Agrippina was composed in the three weeks following Handel's arrival in Venice in November 1709, a theory supported by the autograph manuscript's Venetian paper. In composing the opera Handel borrowed extensively from his earlier oratorios and cantatas, and from other composers including Reinhard Keiser, Arcangelo Corelli and Jean-Baptiste Lully. This practice of adapting and borrowing was common at the time but is carried to greater lengths in Agrippina than in almost all of Handel's other major dramatic works. The overture, which is a