Question: MGM Records produced a 1954 revival of an off-Broadway musical; what is the name of opera this musical was adapted from?

Context paragraphs:
Vanities, A New Musical (album): Vanities, A New Musical contains the songs from the Off-Broadway musical, "Vanities, A New Musical", The album features music and lyrics by David Kirshenbaum, and a book by Jack Heifner.  It was recorded after the musical's Off-Broadway run.  The album was released digitally on December 15, 2009 and physically on February 2, 2010.  The album features Anneliese van der Pol as Kathy, Lauren Kennedy as Mary, and Sarah Stiles as Joanne.

Laurence Mark Wythe: Laurence Mark Wythe (born 8 February 1974, Ashford, Kent, England) is an award winning English composer, lyricist and writer for West End, international and Off-Broadway musicals.  He is principally known for the off-Broadway musical "Tomorrow Morning" (2011) and "Through the Door".  "Tomorrow Morning" won the Jeff Award in Chicago for Best Musical (midsize) in 2009.  The musical opened at the Landor Theatre in South London in October 2010, and off-Broadway at the Theatre at Saint Peters on Lexington Avenue in New York on 31 March 2011.

Neil Berg: Neil Berg is an American composer/lyricist best known for the hit off-Broadway musical "The Prince and the Pauper", as well as the rock musical "The 12", and "Grumpy Old Men: The Musical."  He is the creator and co-producer of Neil Berg's "100 Years of Broadway," a Broadway concert tour, performing over 100 shows a year since 2006.  Neil was also one of the lead Producers, and driving force of the Award Winning 2013 Off-Broadway revival of Maltby and Shire's Closer Than Ever, at The York Theater.  He studied Piano/musical composition with Walter Ponce, Robert Printz and Sue Peters, and is a product of The BMI Workshop, mentored by Maury Yeston and Skip Kennon.  His theater songs are featured in various Hal Leonard's Musical Anthologies.

The Threepenny Opera: The Threepenny Opera (Die Dreigroschenoper ) is a "play with music" by Bertolt Brecht and Elisabeth Hauptmann, adapted from John Gay's 18th-century English ballad opera, "The Beggar's Opera", with music by Kurt Weill and insertion ballads by François Villon and Rudyard Kipling.  Although Hauptmann produced 80 to 90 percent of the text, Brecht suppressed this and assumed sole credit, and is usually listed as sole author in printed versions.

Philemon (musical): Philemon is a 1975 Off-Broadway musical by Tom Jones and Harvey Schmidt.  The show was produced on "Hollywood Television Theatre" in 1976 with the original cast and directed by Norman Lloyd.  It had a brief Off-Broadway revival in 1991.

Joel Blum: Joel Blum is an American stage actor.  He was nominated for the Tony Award for Best Featured Actor in a Musical twice.  The first was in 1995 for his role as Frank in the Broadway revival of "Show Boat".  The second nomination was in 1997 for playing Buddy Becker in the original production of "Steel Pier".  He was also nominated for the Drama Desk Award for Outstanding Featured Actor in a Musical for his role in "Golf: The Musical".  He was also part of the original production of "42nd Street".  Other Broadway roles include "Stardust, The Music Man" and "Debbie Reynolds On Broadway".  He also played George in the second U.S. national tour of "Billy Elliot the Musical". , and Detective Marks/Man in the Off-Broadway musical "Kid Victory". .

J. B. Adams: J.B. Adams (born September 29, 1954) is an American character stage and film actor, director, and singer.  He has credits in film, television and, most notably, musical theatre.  Originally from Oklahoma City, Oklahoma, he attended Oklahoma City University, where he studied voice, piano, opera, and musical theatre, after which he became a New York-based Broadway actor.  He is perhaps best known for his roles in the Broadway productions of "Beauty and the Beast" (as Maurice, the father), "Annie" (as Rooster/Drake/Bert Healy/FDR), "Parade" (as Luther Rosser), "Me And My Girl" (as Sir Jasper), and "Chitty Chitty Bang Bang" (as Grandpa Potts).  He played the role of Morris Farnsworth in the film "Far From Heaven", as well as originating the same role in the Off-Broadway musical adaptation (2013).  On TV and the web, he has played Santa for Verizon FiOS and has had guest starring roles on "" and "The Michael J. Fox Show".

Zombie Prom: Zombie Prom is an Off-Broadway musical, later adapted into a short film.  It was first produced at the Red Barn Theatre, Key West, Florida in 1993.  It opened off-Broadway in New York City at the Variety Arts Theatre in 1996.  It also opened November 2009 in London with a UK Premiere at the off-West End Landor Theatre.

Little Shop of Horrors (film): Little Shop of Horrors is a 1986 American rock musical horror comedy film directed by Frank Oz.  It is a film adaptation of the off-Broadway musical comedy of the same name by composer Alan Menken and writer Howard Ashman about a nerdy florist shop worker who finds out his venus fly trap can speak.  Menken and Ashman's Off-Broadway musical was based on the low-budget 1960 film "The Little Shop of Horrors", directed by Roger Corman.  The 1986 film stars Rick Moranis, Ellen Greene, Vincent Gardenia, Steve Martin, and Levi Stubbs as the voice of Audrey II.  The film also featured special appearances by James Belushi, John Candy, Christopher Guest, and Bill Murray.  It was produced by David Geffen through The Geffen Company and released by Warner Bros. on December 19, 1986.

MGM Records: MGM Records was a record label started by the Metro-Goldwyn-Mayer film studio in 1946 for the purpose of releasing soundtrack albums of their musical films.  It soon transitioned to a pop music label which continued into the 1970s.  The company also released soundtrack albums of the music for some of their non-musical films as well, and on rare occasions, cast albums of off-Broadway musicals such as "The Fantasticks" and the 1954 revival of "The Threepenny Opera".  In one instance, it even released the highly successful soundtrack album of a film made by a rival studio, Columbia Pictures's "Born Free" (1966).

Supporting paragraphs: MGM Records The Threepenny Opera
Answer: "The Beggar's Opera"