Florence Foster Jenkins (born Narcissa Florence Foster; July 19, 1868 – November 26, 1944) was an American socialite and amateur soprano who was known and mocked for her flamboyant performance costumes and notably poor singing ability.
 The historian Stephen Pile ranked her "the world's worst opera singer".
 "No one, before or since," he wrote, "has succeeded in liberating themselves quite so completely from the shackles of musical notation."
The Marriage of Figaro (Italian: Le nozze di Figaro , ] ), K. 492, is an opera buffa (comic opera) in four acts composed in 1786 by Wolfgang Amadeus Mozart, with an Italian libretto written by Lorenzo Da Ponte.
 It premiered at the Burgtheater in Vienna on 1 May 1786.
 The opera's libretto is based on a stage comedy by Pierre Beaumarchais, "La folle journée, ou le Mariage de Figaro" ("The Mad Day, or The Marriage of Figaro"), which was first performed in 1784.
 It tells how the servants Figaro and Susanna succeed in getting married, foiling the efforts of their philandering employer Count Almaviva to seduce Susanna and teaching him a lesson in fidelity.
Miles Tredinnick, also known as Riff Regan, (born Warrington 18 February 1955) is a rock musician, songwriter and a stage and screenwriter.
 In the 1970s, he was the lead singer with the British rock band London.
 Afterwards he went on to write comedy plays for the stage.
 He has also written scripts for Frankie Howerd, including the television special "Superfrank!
" and the stage comedy "Up Pompeii!
"
Trout Opera Company (广州鳟鱼歌剧艺术团) is the first professional opera company established in South China.
 Based in Guangzhou, it is also the first Chinese western opera company that is not affiliated with any governmental institutions.
 Renowned mezzo-soprano Yun Deng, the first Chinese opera singer contracted by the New York Metropolitan Opera, acts as the company's artistic director.
 At the helm of the company is baritone Zheming Wu, who, like Yun Deng, also hails from Guangdong.
 Yulong Song, a veteran stage designer who previously worked with the Metropolitan Opera and ABC Television in the U.S., oversees stage designing at Trout Opera.
 Trout Opera currently boasts over 20 professional singers and young artists, nearly one third of them have studied overseas, such as in the United States, Italy, Britain, Russia, and Ukraine.
 Notable Trout singers who have won national recognition include Guoling Wu (soprano), Nan Zheng (soprano), Ying Qiu (mezzo-soprano).
Georgina Ann Stirling (April 3, 1866 – April 23, 1935) was a Newfoundland opera singer, known by her stage name Marie Toulinquet.
 Born in Twillingate, Newfoundland, she became a world-renowned prima donna soprano who played in opera houses throughout Europe and United States.
 She was Newfoundland's first opera singer and became known as "The Nightingale of the North."
Gioconda Vessichelli (born in Rome, Italy) is an opera singer.
 Gioconda is the inventor and pioneer of BollywoOPERA style.
 She has sung in the Bollywood movie "Prague "in 2013, and she has given her voice for the Bollywood movie "Mary Kom" on the song "Ziddi dil" together with Vishal Dadlani.On 19th May 2017 her song "Itni si baat hai" has been released by the label T-series.
 On 20 December 2014 the song "Thodi Daaru" was released featuring Mika Singh.
 Gioconda has done live performances as first fusion ever between opera and classical Hindi music with artists of the caliber of Grammy Award winner Sukhwinder Singh, Hari Haran, Gino Banks, Niladri Kumar, Silvaganesha, in festivals and auditoriums like Nehru Centre[20] in Mumbai.
 She collaborates with Anup Jalota, and many others.
 On 31 March 2016 her international video "We are one" in which she sings and acts together with Anup Jalota for peace in the world has been launched from the Minister of India in Delhi.
 She is in the annual book of Italian opera singer for having sung in the first world edition of contemporary opera at "Teatro comunale di Modena", broadcast on Italian state radio RAI.
 Gioconda is the first singer in the premiere world ever of the contemporary opera “Lavinia fuggita” by Matteo d’Amico.
 She has two degrees in opera singing and musicology from Italian conservatory "Santa Cecilia" and international high school of opera "H.Wolf".
 The tenor Luciano Pavarotti has been her teacher, among other opera singers who selected her as one of the best students.
 She was selected as best singer at accademia rossiniana in Pesaro and she debuts the role of "Madama cortese" in "il viaggio a Reims" by Rossini with the symphonic orchestra of Rof at Rossini theatre in Pesaro.
 She sings again in a Rossini opera at Ercolano international opera season in "Il barbiere di Siviglia" and at teatro Politeama opera season in Lecce.
 After Rossini she debuts "Carmen" by Bizet.
 Her interpretation of the role "Mimì" in the opera "La Boheme" by Puccini received positive critiques.
Giuseppina (or Giuseppa) Brambilla (9 May 1819 – April 1903) was an Italian opera singer who, like her sisters Marietta and Teresa Brambilla, sang leading roles in the major opera houses in Italy, Spain, France and England.
 Although often described in modern reference works as a contralto, she also sang many soprano roles including Marie in "La fille du régiment" and Abigaille in "Nabucco".
 She married the tenor Corrado Miraglia in 1857 and retired from the stage in 1862.
 Her niece, Teresina Brambilla, was also an opera singer.
Caterina Jarboro (July 24, 1898 – August 13, 1986) was an African-American opera singer.
 She was the first female black opera singer ever to sing on an opera stage in America, twenty-two years before Marian Anderson's début at the Metropolitan Opera.
Glorious!
 is a 2005 stage comedy by Peter Quilter, telling the story of Florence Foster Jenkins.
The list of music considered the worst consists of albums or songs that have been considered the worst music ever made by various combinations of music critics, television broadcasters (such as MTV), radio stations, composers, and public polls.
 A piece of music needs to have been notable, popular, or memorable to be deemed the "worst ever", or it would be unlikely to top all-time public polls a few years after it was released.
 As such, a piece usually needs to have had a high-profile at the time of its release, such as an unexpected hit that was highly disliked outside of its fanbase.
 Scholarly accounts of the "worst music ever" are rare.
 Most polls or critical lists are light-hearted in nature, especially in pop music.
 Magazines reflect the preferences of their readers, and if polls are influenced by too small a group of readers or critics, they provide unreliable results.
 Most "worst ever" lists do not aim to take into account all music ever created, but are limited to certain time periods, styles of music, and geographical areas.
 Furthermore, individual tastes can vary widely, to the point where very little consensus on a worst song can be achieved; the winning song in a CNN e-mail poll received less than 5 percent of the total votes cast.
 There are a handful of scholars who have done more in-depth analysis of music perceived to be bad, including Irwin Chusid, Barry Hansen (better known by the stage name Dr. Demento) and Darryl W. Bullock, author of the 2013 book "The World's Worst Records".

Question: Who wrote the stage comedy based on the life of "the world's worst opera singer"?
Answer: Peter Quilter