The 50 Greatest Pieces of Classical Music is a selection of classical works recorded by the London Philharmonic Orchestra with conductor David Parry.
 Recorded at Abbey Road Studios, Royal Festival Hall and Henry Wood Hall in London, the album was released in digital formats in November, 2009 and as a 4-CD set in 2011.
 The 50 Greatest Pieces of Classical Music has sold over 200,000 copies and spent over three years as one of the top 10 classical albums on iTunes.
The Penguin Guide to Recorded Classical Music (formerly The Penguin Guide to Compact Discs and, from 2003 to 2006, The Penguin Guide to Compact Discs and DVDs) was a widely distributed annual publication from Britain published by Penguin Books that reviewed and rated currently available recordings of classical music.
 It was written by Ivan March, a music journalist, consultant and former professional musician; Edward Greenfield, former music critic of "The Guardian" newspaper and Robert Layton, music writer and lecturer.
 All three were also reviewers for the UK classical music periodical "Gramophone".
 From 2008-2010, a fourth contributor was listed also as a co-author, Paul Czajkowski, who had been listed an editor from the 2002 book.
Uncommon Ritual is the second album released by Sony Classical of string trios, following Appalachia Waltz, with unusual instrumentation and influences from bluegrass and folk music to create an Americana-style of traditional classical music.
 "Uncommon Ritual" adds jazz, blues, and elements from world music to the mix.
 Regarding the genre-defying nature of the music, New York times music critic Ben Ratliff wrote, "Despite its inclusion of Bach and Pablo de Sarasate's "Zigeunerweisen", "Uncommon Ritual" is not a classical album.
 But neither does it belong to bluegrass, traditional Irish music, jazz or any of the other traditions it lightly borrows from.
 It's sort of a chamberized health shake of music that's acceptable to a National Public Radio listenership: it comes with an unmistakable patina of culture, the pieces are brief and funny and the sound of the music is comfortably familiar."
 The trio includes double-bassist and composer Edgar Meyer, banjoist and composer Béla Fleck, and mandolin player Mike Marshall.
 The album is noted for the variety of instruments used, and the performers' ability to change instruments fluently within songs.
 The pairing of these three musicians was new for the recording of this album; however, Meyer and Fleck's musical relationship dates back to the mid '80s.
The UK Classical Charts are three record charts based on classical music in the United Kingdom: the Classical Artist Albums Chart, the Classical Compilation Albums Chart and the Specialist Classical Albums Chart.
 The charts are commercial monitoring and marketing devices used by the UK music industry to measure its effectiveness in promoting and selling albums, nominally in the field of classical music.
 All three charts are compiled by the Official Charts Company (OCC).
 The measurements are made by collating the returns of sales from a number of well-known music stores (high street and online stores) on a regular basis, and this enables a ranking to be established.
 Most classical artist album sales in the UK are from crossover artists.
 For an album to be classified as classical in the charts, it has to have 60% of the playing time dedicated to "classical or traditional music".
 Only albums that entirely classical or traditional music qualify for inclusion in the Specialist Classical Albums Chart.
Kaka Hathrasi (18 September 1906 – 18 September 1995) was a noted Hindi satirist and humorist poet of India.
 His real name was Prabhu Lal Garg.
 He wrote under the pen name "Kaka Hathrasi".
 He chose "Kaka", as he played the character in a play which made him popular, and "Hathrasi" after the name of his hometown Hathras.
 He has 42 works to his credit, comprising a collection of humorous and satirical poems, prose and plays published by various publishers.
 He also wrote three books on Indian classical music under the pen name "Vasant".
 In 1932, he established "Sangeet Karyalaya" (initially Garg and Co.), a noted publishing house for the books on Indian classical music and dance and started publishing a monthly magazine "Sangeet" in 1935, which earned a high reputation.
 "Sangeet" is the only periodical on Indian classical music and dance which has been continuously published for over 78 years.
 Kaka Hathrasi had many talents – as a writer, poet, musician, musicologist, actor and a fine painter.
 .
 He was a regular performer of Hindi Kavi Sammelan.
 In fact, he was one of the poets who established Hasya (comic) Kavi on Kavi Sammelan stage.
Streetwise is the debut studio album by American classical pianist Richard Kastle, released on March 5, 1991 by Virgin Records.
 The album has a warning label that reads: ""Parental Advisory: This album contains classical music, no lyrics whatsoever"."
 The musicians debut album was also a part of a larger scheme by Virgin Records to seek out and develop a new and younger audience for classical music.
 Record companies, in the early 1990s, used innovative and hip marketing techniques in an effort to attract younger audiences to classical music.
Abbey Road Studios (formerly known as EMI Studios) is a recording studio at 3 Abbey Road, St John's Wood, City of Westminster, London, England.
 It was established November 1931 by the Gramophone Company, a predecessor of British music company EMI, which owned it until Universal Music took control of part of EMI in 2012.
Lumiere Records is an American classical music record label focusing on classical music with an emphasis on popular classical hits with crossover appeal, as well as pop arrangements recorded by classical ensembles such as string quartets.
 It was established by Victoria Paterson in 2006 and is based in New York, New York.
 Lumiere Records is distributed through Naxos of America, a division of Naxos Records.
The La Catrina Quartet is a group of four U.S.-based classical musicians who specialize in traditional and classical music from the Americas as well as traditional European pieces.
 The group was formed in 2001 by four graduate students at the Western Michigan University.
 The group tours regularly through the United States and Mexico, with about 50 performances per year at venues such as New Museum of Musical Instruments in Phoenix, the Symphony Space in New York and the Festival Internacional Cervantino.
 The quartet has collaborated with orchestras, composers and others to create new compositions, and record pieces by Latin American artists.
 In 2012, the group won a Latin Grammy for Best Classical Recording with "Brasilero".
 It has also won the Research and Creative Scholarship Prize from the Western Michigan University and the Creative Scholarship and Arts Council Award of North Carolina.
The Friendly Guide to Music is a 'beginner's guide' to classical music, voiced by English actor and presenter Tony Robinson.
 It covers the period from early music, Medieval and Renaissance music, to the modern era, 20th-century classical music, contemporary classical music, and 21st-century classical music, and its objective is to create a guide to music that is not needlessly complex.

Question: When was studio, at which 'The 50 Greatest Pieces of Classical Music' was recorded, established?
Answer: November 1931