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.
Venus and Adonis, a classical myth, was a common subject for art during the Renaissance and Baroque eras.
 Some works which have been titled "Venus and Adonis" are:
A composition of Venus and Adonis by the Venetian Renaissance artist Titian has been painted a number of times, by Titian himself, by his studio assistants and by others.
 In all there are some thirty versions that may date from the 16th century, the nudity of Venus undoubtedly accounting for this popularity.
 It is unclear which of the surviving versions, if any, is the original or prime version, and a matter of debate how much involvement Titian himself had with surviving versions.
 There is a precise date for only one version, that in the Prado in Madrid, which is documented in correspondence between Titian and Philip II of Spain in 1554.
 However, this appears to be a later repetition of a composition first painted a considerable time earlier, possibly as early as the 1520s.
Vénus et Adonis is an opera ("tragédie en musique") in a prologue and 5 acts composed by Henri Desmarets to a libretto by Jean-Baptiste Rousseau.
 Based on the story of Venus and Adonis in Book X of Ovid's "Metamorphoses", it was first performed by the Académie Royale de Musique at the Théâtre du Palais-Royal in Paris on 28 July 1697 with Marie Le Rochois and Louis Gaulard Dumesny in the title roles.
 Desmarets staged a major revival of the work with a new prologue at the court of Leopold, Duke of Lorraine in 1707.
 During the composer's lifetime, it was performed in Germany, Belgium, and France, but then fell into obscurity.
 Its first staging in modern times took place at the Opéra de Nancy on 28 April 2006.
Herzog Blaubarts Burg ("Duke Bluebeard's Castle") (1963) is a film of the opera "Bluebeard's Castle" by the Hungarian composer Béla Bartók, written in 1911 to a symbolist libretto by the poet and later film theorist Béla Balázs.
 The film was made for West German television, Süddeutscher Rundfunk, and was produced by Norman Foster, who also performs the lead role.
 The designer was Hein Heckroth who brought in his old friend Michael Powell, for whom he had designed a number of films, to direct it.
 The film, which was shot at Dürer Film Ateliers in Salzburg, Austria, was out of circulation for decades because of legal problems.
Venus and Adonis is an opera in three acts and a prologue by the English Baroque composer John Blow, composed in about 1683.
 It was written for the court of King Charles II at either London or Windsor.
 It is considered by some to be either a semi-opera or a masque, but "The New Grove" names it as the earliest known English opera.
Barbe-bleue (en.
 "Bluebeard") (ru.
 «Синяя борода», "Sinjaja boroda") is a "ballet-féerie" in three acts and seven scenes, originally choreographed by Marius Petipa to the music of Pyotr Schenk.
 The libretto was created by the author and dramatist Countess Lydia Pashkova from the fairy tale "Bluebeard" by Charles Perrault.
 The ballet was first presented by the Imperial Ballet on December 20 [O.S. December 8] 1896 at the Imperial Mariinsky Theatre in St. Petersburg, Russia, the first performance being a benefit in honor of Marius Petipa's fiftieth anniversary in service to the St. Petersburg Imperial Theatres.
Bluebeard's Castle (Hungarian: A kékszakállú herceg vára ; literally: "The Blue-Bearded Duke's Castle") is a one-act opera by Hungarian composer Béla Bartók.
 The libretto was written by Béla Balázs, a poet and friend of the composer, and is written in Hungarian, based on the French literary tale "La Barbe bleue" by Charles Perrault.
 The opera lasts only a little over an hour and there are only two singing characters onstage: Bluebeard ("Kékszakállú "), and his new wife Judith ("Judit " ); the two have just eloped and Judith is coming home to Bluebeard's castle for the first time.
The Death of Adonis is a c.1614 painting by Peter Paul Rubens, now in the Israel Museum in Jerusalem.
 It shows the dead Adonis being mourned by Venus, Cupid and the Three Graces
The history of opera in Latin America dates back to at least the early 18th century.
 Opera arrived in Latin America as a consequence of European colonization.
 On October 19, 1701, "La púrpura de la rosa" premiered in Lima in the Viceroyalty of Peru, the first opera known to be composed and performed in the Americas.
 It is an opera in one act by Spanish composer Tomás de Torrejón y Velasco with a libretto by Pedro Calderón de la Barca, and is the only surviving opera by Torrejón y Velasco.
 It tells the myth of the love of Venus and Adonis, which provoked Mars's jealousy and his desire for vengeance.

Question: Which opera, if any,  Venus and Adonis or Bluebeard's Castle has more acts ?
Answer: Venus and Adonis