W. S. Gilbert in the context of "Gaiety Theatre, London"

A burlesque is a literary, dramatic or musical work intended to cause laughter by caricaturing the manner or spirit of serious works, or by ludicrous treatment of their subjects. The word is loaned from French and derives from the Italian burlesco, which, in turn, is derived from the Italian burla – a joke, ridicule or mockery.

Burlesque overlaps with caricature, parody and travesty, and, in its theatrical form, with extravaganza, as presented during the Victorian era. The word "burlesque" has been used in English in this literary and theatrical sense since the late 17th century. It has been applied retrospectively to works of Chaucer and Shakespeare and to the Graeco-Roman classics. Contrasting examples of literary burlesque are Alexander Pope's The Rape of the Lock and Samuel Butler's Hudibras. An example of musical burlesque is Richard Strauss's 1890 Burleske for piano and orchestra. Examples of theatrical burlesques include W. S. Gilbert's Robert the Devil and the A. C. Torr – Meyer Lutz shows, including Ruy Blas and the Blasé Roué.

Gilbert and Sullivan were a Victorian-era theatrical partnership of the dramatist W. S. Gilbert and composer Arthur Sullivan. The two men collaborated on fourteen comic operas between 1871 and 1896, of which H.M.S. Pinafore, The Pirates of Penzance and The Mikado are among the best known. The producer Richard D'Oyly Carte brought Gilbert and Sullivan together and nurtured their collaboration. He built the Savoy Theatre in 1881 to present their joint works (which came to be known as the Savoy Operas) and founded the D'Oyly Carte Opera Company, which performed and promoted Gilbert and Sullivan's works for more than a century.

Gilbert, who wrote the witty, satiric libretti for these operas, created fanciful "topsy-turvy" worlds where each absurdity is taken to its logical conclusion: fairies rub elbows with British lords, flirting is a capital offence, gondoliers ascend to the monarchy, and pirates emerge as noblemen who have gone astray. Sullivan, six years Gilbert's junior, composed the music, contributing memorable melodies that could convey both humour and pathos.

The Mikado; or, The Town of Titipu is a comic opera in two acts, with music by Arthur Sullivan and libretto by W. S. Gilbert, their ninth of fourteen operatic collaborations. It opened on 14 March 1885, in London, where it ran at the Savoy Theatre for 672 performances, the second-longest run for any work of musical theatre and one of the longest runs of any theatre piece up to that time. By the end of 1885, it was estimated that, in Europe and America, at least 150 companies were producing the opera.

The Mikado is the most internationally successful Savoy opera and has been especially popular with amateur and school productions. The work has been translated into numerous languages and is one of the most frequently played musical theatre pieces in history. The Mikado is a satire of late 19th century British institutions, society and politics. By setting the opera in a fantasy Japan, an exotic locale far away from contemporary Britain, Gilbert was able to satirise British politics more freely and soften the impact of his criticisms of British social institutions, in a similar way that he used other "foreign" settings in Princess Ida, The Gondoliers, Utopia, Limited and The Grand Duke. Nevertheless, some 21st-century productions of the opera in the United States have drawn criticism for promoting stereotypes of East Asians.

Robert the Devil, or The Nun, the Dun, and the Son of a Gun is an operatic parody by W. S. Gilbert of Giacomo Meyerbeer's grand opera Robert le diable, which was named after, but bears little resemblance to, the medieval French legend of the same name. Gilbert set new lyrics to tunes by Meyerbeer, Bellini, Offenbach and others.

The piece premiered at the opening of the newly rebuilt Gaiety Theatre in London on 21 December 1868. An extravaganza played on a very large scale, it ran for over 120 performances and played continuously in the British provinces for three years thereafter. It also enjoyed several revivals. The original production starred Nellie Farren in the title role – she became the company's leading "principal boy". Several of the other male roles were played by women, as was common in burlesques of the day.

Sir Arthur Seymour Sullivan MVO (13 May 1842 – 22 November 1900) was an English composer. He is best known for 14 comic opera collaborations with the dramatist W. S. Gilbert, including H.M.S. Pinafore, The Pirates of Penzance and The Mikado. His works include 24 operas, 11 major orchestral works, ten choral works and oratorios, two ballets, incidental music to several plays, and numerous church pieces, songs, and piano and chamber pieces. His hymns and songs include "Onward, Christian Soldiers" and "The Lost Chord".

The son of a military bandmaster, Sullivan composed his first anthem at the age of eight and was later a soloist in the boys' choir of the Chapel Royal. In 1856, at 14, he was awarded the first Mendelssohn Scholarship by the Royal Academy of Music, which allowed him to study at the academy and then at the Leipzig Conservatoire in Germany. His graduation piece, incidental music to Shakespeare's The Tempest (1861), was received with acclaim on its first performance in London. Among his early major works were a ballet, L'Île Enchantée (1864), a symphony, a cello concerto (both 1866), and his Overture di Ballo (1870). To supplement the income from his concert works he wrote hymns, parlour ballads and other light pieces, and worked as a church organist and music teacher.

H.M.S. Pinafore; or, The Lass That Loved a Sailor is a comic opera in two acts, with music by Arthur Sullivan and a libretto by W. S. Gilbert. It opened at the Opera Comique in London on 25 May 1878, and ran for 571 performances, which was the second-longest run of any musical theatre piece up to that time. H.M.S. Pinafore was Gilbert and Sullivan's fourth operatic collaboration and their first international sensation.

The story takes place aboard the Royal Navy ship HMS Pinafore. The captain's daughter, Josephine, is in love with a lower-class sailor, Ralph Rackstraw, although her father intends her to marry Sir Joseph Porter, the First Lord of the Admiralty. She abides by her father's wishes at first, but Sir Joseph's advocacy of the equality of humankind encourages Ralph and Josephine to overturn conventional social order. They declare their love for each other and eventually plan to elope. The Captain discovers this plan, but, as in many of the Gilbert and Sullivan operas, a surprise disclosure changes things dramatically near the end of the story.

The Pirates of Penzance; or, The Slave of Duty is a comic opera in two acts, with music by Arthur Sullivan and libretto by W. S. Gilbert. Its official premiere was at the Fifth Avenue Theatre in New York City on 31 December 1879, where it was well received by both audiences and critics. Its London debut was on 3 April 1880, at the Opera Comique, where it ran for 363 performances.

The story concerns Frederic, who, having completed his 21st year, is released from his apprenticeship to a band of tender-hearted pirates. He meets the daughters of the incompetent Major-General Stanley, including Mabel, and the two young people fall instantly in love. Frederic learns, however, that he was born on 29 February, and so, technically, he has a birthday only once each leap year. His indenture specifies that he remain apprenticed to the pirates until his "twenty-first birthday", meaning that he must serve for another 63 years. Bound by his own sense of duty to honour his bond with the pirates, Frederic's only solace is that Mabel agrees to wait for him faithfully. The pirates' maid-of-all-work, Ruth, eventually reveals a fact that saves the day.