Some context: 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 derives from the Italian burlesco, which, in turn, is derived from the Italian burla - a joke, ridicule or mockery. Burlesque overlaps in meaning with caricature, parody and travesty, and, in its theatrical sense, with extravaganza, as presented during the Victorian era. "Burlesque" has been used in English in this literary and theatrical sense since the late 17th century.
Victorian burlesque, sometimes known as "travesty" or "extravaganza", was popular in London theatres between the 1830s and the 1890s. It took the form of musical theatre parody in which a well-known opera, play or ballet was adapted into a broad comic play, usually a musical play, often risque in style, mocking the theatrical and musical conventions and styles of the original work, and quoting or pastiching text or music from the original work. The comedy often stemmed from the incongruity and absurdity of the classical subjects, with realistic historical dress and settings, being juxtaposed with the modern activities portrayed by the actors. Madame Vestris produced burlesques at the Olympic Theatre beginning in 1831 with Olympic Revels by J. R. Planche. Other authors of burlesques included H. J. Byron, G. R. Sims, F. C. Burnand, W. S. Gilbert and Fred Leslie.  Victorian burlesque related to and in part derived from traditional English pantomime "with the addition of gags and 'turns'." In the early burlesques, following the example of ballad opera, the words of the songs were written to popular music; later burlesques mixed the music of opera, operetta, music hall and revue, and some of the more ambitious shows had original music composed for them. This English style of burlesque was successfully introduced to New York in the 1840s.  Some of the most frequent subjects for burlesque were the plays of Shakespeare and grand opera. The dialogue was generally written in rhyming couplets, liberally peppered with bad puns. A typical example from a burlesque of Macbeth: Macbeth and Banquo enter under an umbrella, and the witches greet them with "Hail! hail! hail!" Macbeth asks Banquo, "What mean these salutations, noble thane?" and is told, "These showers of 'Hail' anticipate your 'reign'". A staple of burlesque was the display of attractive women in travesty roles, dressed in tights to show off their legs, but the plays themselves were seldom more than modestly risque.  Burlesque became the speciality of certain London theatres, including the Gaiety and Royal Strand Theatre from the 1860s to the early 1890s. Until the 1870s, burlesques were often one-act pieces running less than an hour and using pastiches and parodies of popular songs, opera arias and other music that the audience would readily recognize. The house stars included Nellie Farren, John D'Auban, Edward Terry and Fred Leslie. From about 1880, Victorian burlesques grew longer, until they were a whole evening's entertainment rather than part of a double- or triple-bill. In the early 1890s, these burlesques went out of fashion in London, and the focus of the Gaiety and other burlesque theatres changed to the new more wholesome but less literary genre of Edwardian musical comedy.
what other notable aspects of the article are there?
A: Burlesque became the speciality of certain London theatres,
Some context: Gnarls Barkley is an American soul duo, composed of singer-songwriter CeeLo Green and producer Danger Mouse. They have released two studio albums, St. Elsewhere (2006) and The Odd Couple (2008). St. Elsewhere was recorded on the Warner Music UK label, and contained their hit single "Crazy" which topped at number two on the US Hot 100, and topped the charts in the UK. It was also nominated at the 2007 Grammy Awards for Record of the Year, and was platinum certified for shipping over 1,000,000 records.
In early March 2008, the duo's second album, The Odd Couple, was leaked over the internet prompting the duo to push the release date up from April 8. In an interview with Entertainment Magazine, Danger Mouse said that he "knew it [the leak] was coming...every day, I expected to get a call saying it leaked, and eventually I got a call saying it leaked." On March 18, 2008, the album became available via download on the iTunes Store and Amazon MP3. Hard copies of the album were released on March 25.  Prior to its official release, Green spoke to the album's anti-formulaic qualities, noting bluntly that "there's no formula to it," and that to expect the same wild success of St. Elsewhere is to neglect the ever-present "risk factor in any artistic endeavor." He called it something of an "act of faith" - a true, earnest attempt to create and disseminate a piece of art to those who would seek out its conception.  They appeared as the musical guest on the April 12, 2008 episode of NBC's Saturday Night Live. They were supposed to be in a Digital Short parodying amateur music videos according to the scrolled text but only appeared in the singing performances of the live broadcast.  On November 11, 2008, they released an EP, Who's Gonna Save My Soul, featuring four versions of the song which originally appeared on The Odd Couple, along with a live version of "Neighbors" and a previously unreleased song, "Mystery Man." A music video for "Mystery Man" was directed by Walter Robot and premiered on Yahoo! Music.
What was the Odd Couple?
A:
the duo's second album, The Odd Couple,