Question: Consider the opera company for which Jacqueline Royer sand leading contralto and mezzo-soprano. Who founded that company?

Context articles: Philadelphia Grand Opera Company
Jacqueline Royer
Paris Opera
Philadelphia Lyric Opera Company
Guangzhou Trout Opera Company
Royer Labs
Max Maretzek Italian Opera Company
Connecticut Opera
Chicago Opera Company
American Opera Company

The Philadelphia Grand Opera Company was the name of four different American opera companies active at the Academy of Music in Philadelphia, Pennsylvania during the twentieth century.
 The last and best known of the four was founded in November 1954 with the merger of the Philadelphia Civic Grand Opera Company and the Philadelphia La Scala Opera Company.
 That company in turn merged with the Philadelphia Lyric Opera Company in 1975 to form the Opera Company of Philadelphia.
 Of the three earlier companies, only one lasted beyond one season; a company founded in 1926 which later became associated with the Curtis Institute of Music in 1929.
 That company closed its doors in 1932 due to financial reasons during the Great Depression.
Jacqueline Royer (1884 – 19??)
 was a French opera singer who sang leading contralto and mezzo-soprano roles at the Opéra de Paris, London's Royal Opera House, the Teatro Colón in Buenos Aires, and the Opéra de Monte-Carlo.
 Active on the stage from 1904 until 1924, she created several roles in early 20th century operas, including Carmine in the posthumous premiere of Ponchielli's "I Mori di Valenza".
The Paris Opera (French: "Opéra de Paris" ;    ) is the primary opera company of France.
 It was founded in 1669 by Louis XIV as the Académie d'Opéra , and shortly thereafter was placed under the leadership of Jean-Baptiste Lully and officially renamed the Académie Royale de Musique , but continued to be known more simply as the Opéra .
 Classical ballet as we know it today arose within the Paris Opera as the Paris Opera Ballet and has remained an integral and important part of the company.
 Currently called the Opéra National de Paris , it mainly produces operas at its modern 2700-seat theatre Opéra Bastille which opened in 1989, and ballets and some classical operas at the older 1970-seat Palais Garnier which opened in 1875.
 Small scale and contemporary works are also staged in the 500-seat Amphitheatre under the Opéra Bastille.
The Philadelphia Lyric Opera Company was an American opera company located in Philadelphia, Pennsylvania that was active between 1958 and 1974.
 The company was led by a number of Artistic Directors during its history, beginning with Aurelio Fabiani.
 Other notable Artistic Directors include Julius Rudel and Anton Guadagno (1966–1972).
 The company produced between four and six of their own operas every year in addition to sponsoring numerous traveling productions from the New York City Opera.
 In 1975 the company merged with the Philadelphia Grand Opera Company but retained its original name.
 With the combined resources of both companies, the Philadelphia Lyric Opera Company began producing higher quality productions with name artists such as Luciano Pavarotti, Joan Sutherland, Roberta Peters, Montserrat Caballé, and others.
 For the bicentennial year 1976, the company commissioned famed opera composer Gian Carlo Menotti to create a new opera.
 The work, The Hero, premiered on June 1, 1976.
 In 1980, the company artistically reorganized to form the Opera Company of Philadelphia.
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).
Royer Labs is a microphone company that some consider to be one of the foremost manufacturers of ribbon microphones.
 The reasons most often cited for this opinion is that Royer has combined the traditional warmth of vintage ribbon microphones with modern output levels.
 While older ribbon microphones had a great sound, the ribbons were weak and would break easily.
 Royer microphones, however, are still strong enough to be placed in front of electric guitar amps, a placement that certain older ribbons could not have weathered.
The Max Maretzek Italian Opera Company (sometimes referred to as the Italian Opera Company, the Italian Grand Opera Company, or Academy of Music Opera Company) was a touring American opera company that performed throughout the United States from 1849-1878.
 The first major opera company in Manhattan and one of the first important companies in the United States, it had a long association with the Academy of Music in New York City where it presented an annual season of opera from 1854 until the company's demise in 1878 There the company performed the United States premieres of "Rigoletto", "Il trovatore", and "La traviata" among other works.
Connecticut Opera was a professional, non-profit, opera company based in Hartford, Connecticut, and a member of OPERA America.
 The company presented three fully staged opera productions during an annual season.
 It was founded in 1942 under the directorship of Frank Pandolfi and was the sixth oldest professional opera company in the United States.
 Pandolfi served as general manager of the company for 32 years and brought most of the major international opera stars of that time to Hartford.
 The first opera produced was "Carmen" which opened in the Bushnell Theatre on April 14, 1942, and starred mezzo-soprano Winifred Heidt in the title role.
 Connecticut Opera went on to feature opera stars such as Plácido Domingo, Beverly Sills, Risë Stevens, and Mary Dunleavy.
The Chicago Opera Company was a grand opera company in Chicago, organized from the remaining assets of the bankrupt Chicago City Opera Company, that produced six seasons of opera at the Civic Opera House from 1940 to 1946 (excluding 1943).
 Artistic directors included Carlo Peroni (1941-1942) and Fausto Cleva (1944-1946), and until 1945 Fortune Gallo was general manager.
 After the war, when consumer goods became more abundant and people spent less money on entertainment, interest in opera collapsed and the company went bankrupt.
 Rather than try to re-organize, the remaining assets were given to the largest creditor, the landlord of the Civic Opera House, Household finance, who then paid off the other remaining creditors.
 After the final collapse of an opera company that had been re-organized five times, there was no resident Chicago opera company until the founding of the Lyric Opera in 1954.
 One of the original group of organizers was Max Rabinoff.
The American Opera Company was the name of four different opera companies active in the United States.
 The first company was a short-lived opera company founded in New York City in February, 1886 that lasted only one season.
 The second company was based out of Rochester, New York and was active from the mid-1920s up until 1930 when it went bankrupt not too long after the Wall Street Crash of 1929.
 The third opera company was a short lived company located in Trenton, New Jersey that was active in 1937.
 The fourth and last opera company was actively performing in Philadelphia from 1946 through 1950.