Question: What is the name of the international company set up in 1977 by English composer and impresario of musical theatre whose well-known works include "The Phantom of the Opera" and "Jesus Christ Superstar"? 

Context paragraphs:
Jesus Christ Superstar (1972 Swedish cast): Jesus Christ Superstar (1972 Swedish cast) is an album released on Philips in 1972.  The album features the Swedish cast from Andrew Lloyd Webber and Tim Rice's rock opera, Jesus Christ Superstar.  In the Swedish cast's studio recording, Jesus was played by Bruno Wintzell.  Among other artists were featured in the Swedish cast by their respective roles; Arne Jansson as Judas, Örjan Ramberg as Herodes, Bernt Henziger as Pilatus, and Agnetha Fältskog as Maria Magdalena.

Gary Mauer: Gary Mauer is an actor who most recently starred in the third national tour of "The Phantom of the Opera" playing the role of the Phantom.  On Broadway, Gary starred as Raoul, Vicomte de Chagny in "Phantom" and played the role of Enjolras in "Les Misérables".  He has also appeared in numerous regional shows, including playing Jesus in "Jesus Christ Superstar".  From April 30, 2007 through May 19, 2007, Gary filled in for Howard McGillin, the actor who formerly played The Phantom in "Phantom", on Broadway.  Gary has a B.F.A in Musical Theater from the University of Arizona in Tucson, and currently resides in New Jersey with his wife, actress Elizabeth Southard, and his two children: Nicholas and Eden.  He can be heard on several CDs, including "Bravo Broadway" and Broadway's "Fabulous Phantoms".  In 2007, he recorded his own album, "This Is the Moment", which includes "The Music of the Night", from "The Phantom of the Opera", and "Bring Him Home", from "Les Misérables".  Gary is a lyric tenor who can currently be seen as part of the "Bravo Broadway" series in concerts throughout the United States with various symphonies.

Josh Young: Josh Young is an American stage actor.  Young had performed in several shows in the Stratford Festival, including "The Grapes of Wrath" (Connie), "Evita" (Che), and "Kiss Me Kate" (Paul).  For his role as Che in "Evita", he won the Broadway World Toronto Award for Best Actor in a Musical.  He also played Marius in a tour of "Les Misérables".  Young was raised in Wallingford, Pennsylvania, and his family is Conservative Jewish.  He trained at the Pennsylvania Governors School for the Arts and holds a B.F.A. in Musical Theatre from Syracuse University.  Young played the role of Judas in the revival of "Jesus Christ Superstar" from 2011-2012, for which he was nominated for the Tony Award for Best Featured Actor in a Musical.  On May 8, Young won the Theatre World Award for an outstanding Broadway debut performance.

Andrew Lloyd Webber: Andrew Lloyd Webber, Baron Lloyd-Webber (born 22 March 1948) is an English composer and impresario of musical theatre.  Several of his musicals have run for more than a decade both in the West End and on Broadway.  He has composed 13 musicals, a song cycle, a set of variations, two film scores, and a Latin Requiem Mass.  Several of his songs have been widely recorded and were hits outside of their parent musicals, notably "The Music of the Night" from "The Phantom of the Opera", "I Don't Know How to Love Him" from "Jesus Christ Superstar", "Don't Cry for Me, Argentina" and "You Must Love Me" from "Evita", "Any Dream Will Do" from "Joseph and the Amazing Technicolor Dreamcoat" and "Memory" from "Cats".  In 2001 the "New York Times" referred to him as "the most commercially successful composer in history".  Ranked the "fifth most powerful person in British culture" by "The Telegraph" in 2008, the lyricist Don Black stated "Andrew more or less single-handedly reinvented the musical."

Jesus Christ Superstar (1996 London Cast): Jesus Christ Superstar (1996 London Cast) is a soundtrack album released in 2000. " Jesus Christ Superstar" is a rock opera created by Tim Rice and Andrew Lloyd Webber in 1970.  This is the 1996 revival version supervised by Lloyd Webber himself.

Friðrik Karlsson: Friðrik Karlsson is an Icelandic musician and songwriter.  He studied classical and jazz/rock guitar and had success with the group Mezzoforte in 1983 with the U.K. top 20 hit, "Garden Party".  He has contributed to the soundtracks of musicals such as Jesus Christ Superstar and Saturday Night Fever and to that of movies such as Evita and Hercules.  His TV work includes accompanying singers Madonna, José Carreras and Tom Jones.  Karlsson has also appeared on albums and singles from Boyzone and Cliff Richard, among others.  Karlsson has moved back home to his native Iceland,after living in London,where he among other jobs worked as a session musician playing guitar in the musical Jesus Christ Superstar.  He has released numerous new-age and relaxation music albums known as "The Feel Good Collection".  In 2014, Karlsson also played as session musician for Kate Bush's first live performances in 35 years, playing guitar for 22 dates.

Jesus Christ Superstar: Jesus Christ Superstar is a 1970 rock opera with music by Andrew Lloyd Webber and lyrics by Tim Rice.  The musical started as a rock opera concept album before its Broadway debut in 1971.  The musical is sung-through, with no spoken dialogue.  The story is loosely based on the Gospels' accounts of the last week of Jesus's life, beginning with the preparation for the arrival of Jesus and his disciples in Jerusalem and ending with the crucifixion.  It depicts political and interpersonal struggles between Judas Iscariot and Jesus that are not present in the Bible.

Jesus Christ Superstar (album): Jesus Christ Superstar is a 1970 rock opera by Andrew Lloyd Webber and Tim Rice.  The album musical is a musical dramatisation of the last week of the life of Jesus Christ, beginning with his entry into Jerusalem and ending with the Crucifixion.

This Jesus Must Die: "This Jesus Must Die" is a song from the rock opera "Jesus Christ Superstar" by Tim Rice and Andrew Lloyd Webber, which also appears in the film version of "Jesus Christ Superstar", and on the album of the musical.  In the 1973 film, it is sung primarily by Bob Bingham as Caiaphas and Kurt Yaghjian as Annas; and on the 1970 album, by Victor Brox as Caiaphas and Brian Keith as Annas.  In the 2000 film it is sung by Frederick B. Owens as Caiaphas and Michael Shaeffer as Annas.

Really Useful Group: The Really Useful Group Ltd. (RUG) is an international company set up in 1977 by Andrew Lloyd Webber.  It is involved in theatre, film, television, video and concert productions, merchandising, magazine publishing, records and music publishing.  The name is inspired by a phrase from the children's book series "The Railway Series" in which Thomas the Tank Engine and other locomotives are referred to as "Really Useful Engines".

Supporting paragraphs: Really Useful Group Andrew Lloyd Webber
Answer: Really Useful Group