George Frideric (or Frederick) Handel ( ; born Georg Friedrich Händel ] ; 23 February 1685 (O.S.) [(N.S.) 5 March] – 14 April 1759) was a German, later British, baroque composer who spent the bulk of his career in London, becoming well known for his operas, oratorios, anthems, and organ concertos. Handel received important training in Halle and worked as a composer in Hamburg and Italy before settling in London in 1712; he became a naturalised British subject in 1727.
 He was strongly influenced both by the great composers of the Italian Baroque and by the middle-German polyphonic choral tradition.
Dido and Aeneas (Z. 626) is an opera in a prologue and three acts, written by the English Baroque composer Henry Purcell with a libretto by Nahum Tate.
 The dates of the composition and first performance of the opera are uncertain.
 It was composed no later than July 1688, and had been performed at Josias Priest's girls' school in London by the end of 1689.
 Some scholars argue for a date of composition as early as 1683.
 The story is based on Book IV of Virgil's "Aeneid".
 It recounts the love of Dido, Queen of Carthage, for the Trojan hero Aeneas, and her despair when he abandons her.
 A monumental work in Baroque opera, "Dido and Aeneas" is remembered as one of Purcell's foremost theatrical works.
 It was also Purcell's only true opera, as well as his only all-sung dramatic work.
 One of the earliest known English operas, it owes much to John Blow's "Venus and Adonis", both in structure and in overall effect.
 The influence of Cavalli's opera "Didone" is also apparent.
Il trionfo dell'onore ("The Triumph of Honour") is an operatic 'commedia' in three acts by the Italian composer Alessandro Scarlatti, with a libretto by .
 It was first performed at the Teatro dei Fiorentini, Naples on 26 November 1718.
 It is Scarlatti's only known comic opera.
Philippe Courbois (fl.
 1705-1730) was a French Baroque composer.
 It is commonly stated that he was maître de musique of the Duchess of Maine, but Michele Cabrini convincingly refutes this claim in his edition of Courbois's cantatas.
 At least three of his masses were performed for the King of France at Versailles.
 Sometime before 1710, Courbois published a book of seven cantatas with texts by Louis Fuzelier, who would later write the libretto of "Les Indes Galantes."
 It is these cantatas for which he is most famous today
Pietro Alessandro Gaspare Scarlatti (2 May 1660 – 22 October 1725) was an Italian Baroque composer, especially famous for his operas and chamber cantatas.
 He is considered the founder of the Neapolitan school of opera.
 He was the father of two other composers, Domenico Scarlatti and Pietro Filippo Scarlatti.
Giuseppe Maria Orlandini (4 April 167624 October 1760) was an Italian baroque composer particularly known for his more than 40 operas and intermezzos.
 Highly regarded by music historians of his day like Francesco Saverio Quadrio, Jean-Benjamin de La Borde and Charles Burney, Orlandini, along with Vivaldi, is considered one of the major creators of the new style of opera that dominated the second decade of the 18th century.
Cristofaro or Cristoforo Caresana (ca. 1640–1709) was an Italian Baroque composer, organist and tenor.
 He was an early representative of the Neapolitan operatic school.
Antonio Lucio Vivaldi (] ; 4 March 1678 – 28 July 1741) was an Italian Baroque composer, virtuoso violinist, teacher and cleric.
 Born in Venice, he is recognized as one of the greatest Baroque composers, and his influence during his lifetime was widespread across Europe.
 He composed many instrumental concertos, for the violin and a variety of other instruments, as well as sacred choral works and more than forty operas. His best-known work is a series of violin concertos known as "The Four Seasons".
George Frideric Handel (23 February 1685 – 14 April 1759) was a German–English Baroque composer who is famous for his operas, oratorios and concerti grossi.
 Handel's compositions include 42 operas; 29 oratorios; more than 120 cantatas, trios and duets; numerous arias; chamber music; a large number of ecumenical pieces; odes and serenatas; and 16 organ concerti.
 His oratorio "Messiah", with its "Hallelujah" chorus, is among the most famous Baroque works and is a popular choice for performances during the Christmas season.
 Among Handel's best-known instrumental works are the Concerti Grossi Opus 3 and 6; "The Cuckoo and the Nightingale", in which birds are heard calling during passages played in different keys representing the vocal ranges of two birds; and his 16 keyboard suites, especially "The Harmonious Blacksmith".
This is a complete list of operas of the Italian Baroque composer Francesco Gasparini (1661–1727).

Question: An operatic commedia in three acts that is by an Italian Baroque composer who was famous for operas and chamber cantatas, was first performed where?
Answer: Teatro dei Fiorentini