Arthur Sullivan in the context of "Richard D'Oyly Carte"

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.

Sir William Schwenck Gilbert (18 November 1836 – 29 May 1911) was an English dramatist, librettist, poet and illustrator best known for his collaboration with composer Arthur Sullivan, which produced fourteen comic operas. The most famous of these include H.M.S. Pinafore, The Pirates of Penzance and one of the most frequently performed works in the history of musical theatre, The Mikado. The popularity of these works was supported for over a century by year-round performances of them, in Britain and abroad, by the repertory company that Gilbert, Sullivan and their producer Richard D'Oyly Carte founded, the D'Oyly Carte Opera Company. These Savoy operas are still frequently performed in the English-speaking world and beyond.

Gilbert's creative output included over 75 plays and libretti, and numerous short stories, poems and lyrics, both comic and serious. After brief careers as a government clerk and a lawyer, Gilbert began to focus, in the 1860s, on writing light verse, including his Bab Ballads, short stories, theatre reviews and illustrations, often for Fun magazine. He also began to write burlesques and his first comic plays, developing a unique absurdist, inverted style that would later be known as his "topsy-turvy" style. He also developed a realistic method of stage direction and a reputation as a strict theatre director. In the 1870s, Gilbert wrote 40 plays and libretti, including his German Reed Entertainments, several blank-verse "fairy comedies", some serious plays, and his first five collaborations with Sullivan: Thespis, Trial by Jury, The Sorcerer, H.M.S. Pinafore and The Pirates of Penzance. In the 1880s, Gilbert focused on the Savoy operas, including Patience, Iolanthe, The Mikado, The Yeomen of the Guard and The Gondoliers.

Jacques Offenbach (/ˈɒfənbɑːx/; 20 June 1819 – 5 October 1880) was a German-born French composer, cellist and impresario. He is remembered for his nearly 100 operettas of the 1850s to the 1870s, and his uncompleted opera The Tales of Hoffmann. He was a powerful influence on later composers of the operetta genre, particularly Franz von Suppé, Johann Strauss II and Arthur Sullivan. His best-known works were continually revived during the 20th century, and many of his operettas continue to be staged in the 21st. The Tales of Hoffmann remains part of the standard opera repertory.

Born in Cologne, Kingdom of Prussia, the son of a synagogue cantor, Offenbach showed early musical talent. At the age of 14, he was accepted as a student at the Paris Conservatoire; he found academic study unfulfilling and left after a year, but remained in Paris. From 1835 to 1855 he earned his living as a cellist, achieving international fame, and as a conductor. His ambition, however, was to compose comic pieces for the musical theatre. Finding the management of Paris's Opéra-Comique company uninterested in staging his works, in 1855 he leased a small theatre in the Champs-Élysées. There, during the next three years, he presented a series of more than two dozen of his own small-scale pieces, many of which became popular.

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.

Savoy opera was a style of comic opera that developed in Victorian England in the late 19th century, with W. S. Gilbert and Arthur Sullivan as the original and most successful practitioners. The name is derived from the Savoy Theatre, which impresario Richard D'Oyly Carte built to house the Gilbert and Sullivan pieces, and later those by other composer–librettist teams. The great bulk of the non-G&S Savoy Operas either failed to achieve a foothold in the standard repertory, or have faded over the years, leaving the term "Savoy Opera" as practically synonymous with Gilbert and Sullivan. The Savoy operas (in both senses) were seminal influences on the creation of the modern musical.

Gilbert, Sullivan, Carte and other Victorian era British composers, librettists and producers, as well as the contemporary British press and literature, called works of this kind "comic operas" to distinguish their content and style from that of the often risqué continental European operettas that they wished to displace. Most of the published literature on Gilbert and Sullivan since that time refers to these works as "Savoy Operas", "comic operas", or both. However, the Penguin Opera Guides and many other general music dictionaries and encyclopedias classify the Gilbert and Sullivan works as operettas.

The D'Oyly Carte Opera Company is a professional British light opera company that, from the 1870s until 1982, staged Gilbert and Sullivan's Savoy operas nearly year-round in the UK and sometimes toured in Europe, North America and elsewhere. The company was revived for short seasons and tours from 1988 to 2003, and since 2013 it has co-produced four of the operas with Scottish Opera.

In 1875, Richard D'Oyly Carte asked the dramatist W. S. Gilbert and the composer Arthur Sullivan to collaborate on a short comic opera to round out an evening's entertainment. When that work, Trial by Jury, became a success, Carte put together a syndicate to produce a full-length Gilbert and Sullivan work, The Sorcerer (1877), followed by H.M.S. Pinafore (1878). After Pinafore became an international sensation, Carte jettisoned his difficult investors and formed a new partnership with Gilbert and Sullivan that became the D'Oyly Carte Opera Company. The company produced the succeeding ten Gilbert and Sullivan operas and many other operas and companion pieces, mostly at the Savoy Theatre in London, which Carte built in 1881 for that purpose. The company also mounted tours in Britain, New York and elsewhere, usually running several companies simultaneously. Carte's able assistant, Helen Lenoir, became his wife in 1888 and, after his death in 1901, she ran the company until her own death in 1913. By this time, it had become a year-round Gilbert and Sullivan touring repertory company.